Sorry, I guess I need to update everyone on how our ER adventure went.
Primary Children's hospital released us a little after midnight and we went home. Sandy and I slept in and then spent the whole day in our pajamas. She is doing great!
The pill she took is on a one pill can kill list -- I'm glad they didn't tell me that until they discharged us or I would have been even more worried than I was. I guess these little ones have such low body weight that the medication can drop their blood sugar so drastically that they are difficult to revive. When we first arrived at the hospital they put an IV port into Sandy's hand in case they needed to give her sugar through an IV.
We were lucky. She drank as much juice as she normally eats in a month and ate plenty and it kept her blood sugar high. Her blood sugar did drop to borderline in the evening, but it stayed (barely) above normal. So she really didn't have the scary reaction we were worried about... Which could mean all the juice did the trick. Or it could mean she didn't swallow the pill, after all, or only got part of it. It's hard to know.
But she's okay now, and I hope we don't have to do that again!