Sounds like you're doing really well.
Good to hear she's doing better - illness can really throw them
Have you tried not offering to see if she'll come to you?
It is the sort of age where this can tend to happen (combined with the illness), but if the breast is available they generally come back for it when still this young. It's a good job you have boy twin being such a trooper keeping things going. He must think he's had a second Christmas
Hang in there. Hopefully it's not much longer