The following rides can accomodate three side by side. Any marked with an asterik means that it might depend on the size of you, your husband, and your daughter.
Magic Kingdom:
Jungle Cruise
Pirates of the Carribean.
Aladdin's Magic Carpets*
The Country Bear Jamboree
The Hall of Presidents
The Haunted Mansion*
It's A Small World (may not be open when you go)
Peter Pan*
Dumbo*
Snow White's Scary Adventures*
Cinderella's Carousel
The Many Adventures of Winnie the Pooh*
Mickey's Philharmagic
The Mad Tea Party
Tommorowland Transit Authority (if you can't fit three side by side, one can sit across - you'll see each other)
Astro Orbiter*
Stitch's Great Escape
The Carousel of Progress
Magic Kingdom Railroad
Epcot:
Spaceship Earth*
Universe of Energy
Mission Space
Living with the Land
Test Track
Maelstrom
El Rio de Tiempo
Journey Into Your Imagination
Honey, I Shrunk the Audience
Body Wars (I don't think this will be open when you go)
Disney Studios:
Tower of Terror
The Great Movie Ride
Indiana Jones Stunt Spectaular
Star Tours
Muppet Vision 3D
The Backlot Tour
Who Wants to Be a Millionaire
The Voyage of the Little Mermaid
Animal Kingdom:
It's Tough to Be A Bug
Primeval Whirl
Triceratop Spin*
Dinosaur
Kilamanjaro Safari
Tarzan Rocks
Festival of the Lion King
Pocahontas and her Forest Friends
I'm sure I'm forgetting some. The most notable exceptions are all of the Magic Kingdom Mountains (Big Thunger MIGHT let you do 3 in a car, but I seriously doubt it), and the Rock 'n Roller Coaster. Those are really the only ones I can think of that can accomodate 3 side by side.