Ok, I think your
disneyland strategy will work well at WDW, particularly at AK and MK. Epcot and DHS may be a little harder, because none of the rides are outside. That being said,...
For MK, I recommend Dumbo to start- also in Fantasyland even though they're dark rides/shows I think she'd probably like Peter pan, Pooh, if she's not too sound aversive Philharmagic and of course Small world. She might enjoy the paddleboat ride that docks in liberty square (I think, now that I'm typing this I realize we've never done it- huh, we'll have to remedy that this trip lol.) Frontierland- it depends on how she is with fast, both splash and BTMR are fun, but def. have dark parts and more tense/fast parts. County Bear jamboree is inside, but it's sweet and not too intense at all. Adventureland- lots to do here- aladdins carpets, swiss family treehouse, jungle cruise (distract her in the temple ruins, otherwise its all outside). Don't forget the parades and character interactions too
AK- lots of amazing shows, my kids adore Lion king (inside) and like flights of wonder (outside). I'd start in Dinoland use with triceratop spin and maybe spend some time in the boneyard, she'd love the pangani trail and maharajah jungle trek, the train to the conservation station is great, also definitely do the safari- truly, AK may become a two day park if she likes the outdoor stuff.
Epcot- mostly inside- spaceship earth is gentle, as is Ellens energy adventure (although 45 min

) my kids really like journey into imagination and the rest of the pavillion. Might be a good idea to start with the livin with the land boat ride in the land pavillion- a lot of it is in the greenhouses with sunlight.) She would probably enjoy the entertainment around the world showcase, too.
ETA- my kids also love seas with nemo and friends and turtle talk with crush- although they are both dim rides, they are gentle
DHS- maybe start with Disney junior live on stage, she might also enjoy voyage of the little mermaid, oh, and the beauty and the beast show is absolutlely wonderful and outside
Have a great trip!