Lori --
I'm a huge fan of getting a +2 test. Looking at when Gizzy decides to drop, you may want to try your best to routinely get a +2. I suspect that if you had seen the drop at +2 by last night, you could have intervened earlier and not have gotten that really big surprise!! As it was, you handled it like a pro.
If you look at Gabby's SS, you'll see she's another one whose prone to fast, early drops. I test at +1, +2, +3, and +4 routinely. I also front load her food cycle -- she's fed at pre-shot, +1, +2, and +3. That way I've got at least a chance of slowing her down. You may want to consider looking at how you're feeding Gizzy, a well.
Gizzy earned a dose reduction. Your new dose is 1.75u. Congrats!