I think given the facts, you should skip Hollywood Studios. Your daughter is not old enough for the thrill rides, and what may appeal to her would be the shows: Beauty and Beast live show, and the Voyage of the Little Mermaid. The Toystory mania ride is great but to go to a park for 1 ride isn't worth it. Plus as someone else stated, the new Fantasyland at MK has a Mermaid ride and has a lot more princess stuff.
We aren't skipping HS b/c I have a 6 year old boy (Well almost 7!) that is very much into Star Wars and enjoys the Jedi training, as well as the Star Tours Ride. My daughter and I will do Beauty and the Beast and Mermaid show. Aside from those things and the toy story ride, there isn't much else that will appeal to us... oh and the fantasmic show but we are coming back for that at night after our mid day break. We are looking forward to Pizza Planet and the honey i shrunk the kids play area too, but honestly, if it weren't for my son loving the Jedi training and Star Tours, HS would be low on our list for parks.