Honestly, I wouldn’t force her to rope drop.
When I was growing up and we went to WDW during the summer, on some days we would sleep in, swim in the morning/early afternoon and go to the parks in the late afternoon through evening and stay late. We always rope dropped one day at Magic Kingdom for the old welcome show though
We are rope droppers now since I have kids who wake up at 5:00 am but when they start being able to stay up later and sleep in more, we will do more of the earlier pool time and later park time.
Will she be able to stay out until park close? If so, I think going in the later part of the day is a good plan for you especially since she isn’t looking to squeeze a ton of rides in. Plus FP+ will really help you get on at least 3 of the things she wants to ride per day.