We had our best trip ever in September 2018! Crowds (excluding Labor Day) are typically much easier to deal with. If your daughter loved it last time, I definitely think you should take her back! The Disney experience is just like no other. Also, if I were you, I would talk to guest services about her issues with waiting in line. I totally understand the uneasiness and concern with being misunderstood. I'm a pretty reserved and quiet person by nature and really hate social conflict of any kind. But the way I see it is that I'm my son's advocate, and if there's any way for him to have a more typical "waiting for a ride" experience (i.e. one that does not involve dangerous drops in blood sugar, potential unconsciousness, and needles ranging from small to big), I'm going to try my best to make sure that happens. So I'll tell guest services the specifics of why a long, hot line could be dangerous for him...then I'll let them decide yes or no. But I really feel that in your daughter's case and my son's, the DAS is needed and will be granted.
I know it’s not funny, but we moms all need some comedic relief here and there, and your “more typical waiting for a ride experience that doesn’t involve unconsciousness and needles’ made me lol! I can definitely relate!