Nice!
Yes, i think if you feed her in a half hour she'll be fine, and checking at +9 is a good idea if you can manage it. When in doubt, leave out more food.
If she is over 50ish and you're set for supplies (HC and plenty of strips), you can shoot on time, full dose in the morning. There are specific directions on how to handle a preshot in the sticky you mentioned on how to handle things if she's lower than 50 at preshot. It's different than handling lower than 50 in the mid-cycle, so read up on it.
The green is a bit addictive, isn't it?! When you start to see progress it's very encouraging! all the work is paying off!