For AK, the paths are all made to simulate the environment in the country you are in, so mostly simulating dirt roads that have had some mud on them. Some people find the paths to be bumpy, but most of the road features are rather small, so not huge bumps.
Oasis Exhibits - as you walk in from the turnstiles to the Discovery Island area, you pass exhibit areas with different animals and birds in them. Most people walk on by, but there are some interesting animals in there to see. For an adult in a wheelchair, some of the rails come almost at eye level; it may be better for a child. The path does include some things like rope bridges and small cave areas, but there are bypasses for all of them.
Its Tough to Be a Bug is a 3D show with wheelchair seating in the back. Its very dark, has some totally dark periods and usually has some children crying and/or leaving early. If she stays in her wheelchair, she may be too low to see. If she sits on a seat, there are several times when things from the seat poke you. At one point, wasps go in to sting people and you will feel a bump in the back. At the end, as the bugs leave, you can feel them bumping slightly on your butt.
Discovery Island trails circle the Tree of Life and are wheelchair accessible. Many different creatures in exhibit areas, plus you can see the carvings on the tree of life.
Festival of the Lion King is a music, dance and special performances show. Wheelchair seating is in the first 2 -3 rows. There is one dark song with a fire twirler. There is a lot going on, with multiple dancers, tumblers and singers.
Camp Mickey-Minnie Greeting Trails are all accessible.
Kilimanjaro Safari does have a warning for guests with neck and back issues, but there is no age or height restriction and infants do ride. There is a dedicated wheelchair/handicapped boarding and unload area, which usually involves an additional wait. There is one tiedown spot in the front row on each of those trams that can accommodate a wheelchair. A stroller style wheelchair could not be tied down unless it has a transport option with tiedown spots. The ride can be very rough, even in the front seats because the tram is being driven on simulated mud roads with ruts. Exactly how bumpy it is depends on which ruts the driver hits. People have written that the handicapped tram is not as bumpy, but I have been in both the handicapped and non-handicapped recently (even riding in the same row) and can say there is no noticeable difference. If you go, you may want to hold her next to you and support her between 2 adults, even if her wheelchair could go on.
Pangani Forest Exploration Trail is fully accessible and there are viewing spots where someone in a wheelchair can see into the observation areas. You may want to lift her up for some things so she can see better.
Wildlife Express Train to Rafikis Planet Watch has a number of accessible spots on different train cars. If she sits low, she may not be able to see during the ride. Passengers sit sideways to the travel of the train. It is smooth, except for the gentle bumps from tracks.
Paths to get from the train to the Rafikis Planet Watch (RPW) area have observation areas for cotton top tamarins. These are viewable from a wheelchair.
RPW Conservation Station has different interactive exhibits, some of which would be viewable from a low wheelchair and some she may need to be lifted out for because she would not be able to reach as far as an adult or older child. There are also some sound booth exhibits that are accessible and there are character greetings.
RPW Affection Station is wheelchair accessible. The 2 things I would warn against from experience are to be prepared to wipe off/clean her wheels after leaving there and that some of the animals may be a bit friendly and like things hanging from wheelchairs. My DDs wheelchair has been chased by goats or goat like animals that like to chew on things (like rubber tires), so my DD refuses to go into petting zoos any more. There is a handwash station inside the fence so you can wash up when going and coming. (A CM right there enforces hand hygiene).
Flights of Wonder is a bird show with wheelchair seating in both the front and the rear and she would be able to stay in her wheelchair and still see the show. A child in a wheelchair would not be able to see much from the rear viewing areas. The area is outdoors, but is roofed with kind of a cloth, tent-like roof. There will be some birds flying overhead, but they are under control of the trainers and the flight is fast.
Maharajah Jungle Trek - kind of the same advice as the Pangani Forest.
Kali River Rapids has a 38 inch height requirement and a warning for neck and back. It is a water ride on an inflatable raft, which is free floating in sort of water paths. There are times when the boat hits up against the side of the path, drops a foot or 2 suddenly or turns so you dont know whether you will be going down forwards or backwards. Riders can get anything from a few sprinkles of water to totally soaked.
Expedition Everest has a 44 inch height requirement and a warning for neck and back. It is actually pretty smooth for a roller coaster.
Finding Nemo - The Musical is a wonderful stage show with singing and performers using huge puppets to portray the characters. There are 3 areas of wheelchair viewing; at the back row of seating, in the middle of the theater (a few seats) and in the very front row on the right side facing the stage (part of the Nemo Dining Package). The back row gives a good overview of the entire stage; the middle row gives a good view of most of the stage and the front row is close, but you can only see that side of the stage well (and since the stage is above eye level, you spend most of the show looking slightly up). Depending on how high she sits in her wheelchair, she may be more comfortable and able to see better if you are holding her.
Primeval Whirl has a 48 inch height requirement and warning for neck and back issues. I have not been on it since it was renovated, but looking from outside, it appears to be the same as it was before renovation - a combination of a roller coaster and random twirling. It is very rough and my youngest DD was not held in place by the restraints since she cant brace with her legs. Her older sister was on once and says she never wants to do it again - it was that bad. I also have no desire to go on.
Triceratop Spin has a wheelchair accessible dino, but some wheelchairs will not fit. Otherwise, similar to Aladdins Magic Carpets.
Dinosaur has a 40 inche height requirement and a neck and back warning. It is very rough and jerky and much of it takes place in near darkness.