Crystal,
Thanks for your question!
The pull down bed in select rooms at
Disney's Port Orleans Resort - Riverside are approximately 5' 6" long. So while it may be a bit snug, I think that she will fit!
I love these sideways pull down Murphy style beds that they are adding. The Moderate resort rooms are certainly not cramped, but even for those rooms when you have four people moving about it can get a bit crowded. Having that extra room available right up until bedtime is a great bonus.
By the way, if you have the time, make sure you check out the
Movies Under The Stars schedule at your resort. I think this is a hidden gem of the Disney resorts. When the movie is something we are interested in, and the schedule works out right, we love to park out on the lawn with a nighttime snack to enjoy a movie and the beautiful outdoors. It is also a more relaxing evening that is nice to toss into an otherwise active vacation schedule.
Have a Magical Vacation!
Doug