My insulin was just delivered today. Not starting it until the weekend though so I can be there to monitor her. Will let you know how it goes.
The food separation issue is a tough one. Serena, the one diagnosed, will eat up whatever I put in front of her and then move on to her sister's bowl since she never finishes her. I'm hoping her sister will learn soon that she needs to eat up - snooze you lose! I feed them in different rooms, but its a one bedroom apartment, so you don't have to go very far to find the other bowl. I just purchased an automatic feeder than can accommodate wet food, 'cause having to feed them every evening is tough if I want to go out or stay at my boyfriend's for the night. With that I'm concerned that Serena will be a bully and I won't be there to make sure her sister eats.
Good news is that I THINK Serena has put on a little weight (she'd lost half her weight from the diabetes) and her coat seems softer. She isn't drinking from every water source she finds and the litter box has been much more manageable.