If it was me, I'd take her to Fantasyland first. Peter Pan, SW, Toad, and then over to IASW. Then over to HM and Jungle Cruise. Also POTC while over there to avoid a lot of extra walking. Later on, the DL train and Lincoln. A sit down lunch at Cafe Orleans might be a nice break. The subs are cute and a classic DL attration (even if re-done) if she can go down the stairs in the sub. That is a long slow line though. The Pooh ride is also cute, but rather far back in the park. You could do lunch at the Hungry Bear instead and have a nice relaxing meal by the water, then head over to Pooh.
At DCA, I'd stop by the Animation building, Monsters, and maybe Aladdin if it was running. To me, DL would be the priority though because of its history.
Oh, a picture with a character would be a fun souvenier to take home.