My 7 yr old ds was diagnosed with duane's at a similar age to your dd, although his affects his right eye, minimal movement towards his ear (same as your dd). DS has always turned his head to compensate for the lack of vision, for him it is normal.
The orthoptists will keep an eye on her as there is a chance with Duane's that she could develop tunnel vision in the affected eye. There is also a possibility that she will have double vision in the affected eye, especially when looking to her left (not straight on, IYGWIM). When she goes for check-ups they will do a selection of tests, checking her general vision in each eye, as well as making sure that the eyes work together as far as is possible and that your dd can see in 3D. Obviously these will be easier to conduct as your dd gets older, but they managed with my ds from about a year onwards. We are hopefully going to be discharged from the hospital and just be under the local optician soon, have one more check up and if all is well then no more hospital visits
Ds has glasses, but these have nothing to do with his Duane's, he is long sighted (I think, needs them for distance) and has an astigmatism. I have been told that there is nothing to be done about his Duane's, but that other than some occupations (firefighting etc) he should have no limitations on what he can do, and so far that has been the case. I make his teacher aware at the beginning of each school year as it has been recommended that he sits directly facing whatever he needs to be focussing on (especially the board), and also that in PE and the playground, he will be unaware of objects on his right. Other than that, he is an orange stripe belt at a local martial arts school, is a typical 7 yr old boy, hasn't yet mastered riding a bike without stabilisers, but whether this is because of his Duane's I am unsure.
HTH, and sets your mind at ease a bit.