Update on Truffles, she apparently dropped down to 900g from 940 on friday, so a bit worrying for over the weekend as she had the dental on friday. She came home, already rattling and winding up her two cage mates the minute she stepped into the cage and wanted feeding straight away. She did struggle over the weekend with anything leafy or hard, so I chopped her food up small, and at the same time kept enticing her with partially crushed nuggets, mixed with quaker oats, which she enjoyed.
At her check up she weighed 930g, and that was in the morning before feeding time, and tonight she weighed in at 955g so her weight is creeping back up. She now has the signs of a proper belly again, and is so much brighter than she was. Bald patches are still there, and i'm hoping that it was more a sign if vitamin deficiency than hormonal, as nothing showed up on x-ray either.
On the subject of spaying, we've decided to wait and see what happens weight wise first, as I want her to gain at least 200g weight wise, as she's not meant to be a small guinea pig, and the extra weight will aid her recovery if we go ahead. I checked her poops tonight, nothing small about them, they're huge!