I had two girls spayed 11 days ago, and we came close to loosing one, she came round from the op ok and ate enough for them to be happy to send her home, but her temp starting dropping in the evening, and although she would eat greens in small amounts, she wasn’t eating anywhere near enough. I spent several nights up with her to keep her warm and keep small amounts of greens going through her little tum.I tried wrapping a wheat bag in a soft blanket, but she didn’t like that, so what I ended up doing, was wrapping bunny sized bits of the now cut up blanket around the wheat bag, then wrapping the warmed blanket around her, which she seemed happy with. This did mean that I had to keep warming another bit of blanket, plus, if she moved, the blanket needed to be carefully pulled over her. I also kept her sat on an old duvet, to keep her warm from underneath.
It took a full week before she could maintain her body temp on her own, thankfully now, she isn’t looking back, and thinks I don’t give her anywhere near enough greens or pellets.I would say, make sure you have more than one way to keep her warm, as not everybunny will lie by something warm, and have plenty of something in that she really likes to eat, and is easy for her to eat, as well as the cc.
The running away could well be an indication of her growing up, rather than something to worry about.