Thanks for all the responses. Sounds like some of you have made trips work- and that's encouraging.
To be honest with you, she had been going a little crazy for sometime which is why I thought a WDW trip might bring her back to ground. She never won any awards for World's Best Friend, but was always a lot of fun- so take that for what you will.
However, no matter what goes on back home, it was mortifying to stand there with a 20-something yr old baby screaming and yelling. As for the fathers thing, two of them were more than happy to oblige, which is great, but most of them seemed totally flummoxed and very uncomfortable. Also, as a former family magazine editor, one thing I know *never* to do is make comments on other people's parenting, which constituted a lot of her pickup lines...
"Your son is so cute- just like you." "Hi, do you take your kids here a lot? What rides should I go on?" and my personal favorite, "Your daughter is too small to ride Kali River Rapids." I don't know, it was just embarassing.
Judging from the other responses here, I feel like if it was a strong friendship to begin with, it would have held out over long lines, expensive Dole Whips, and ride conflicts.