We went over to visit her in Northampton Hospital yesterday evening. (It's a bit of a drive - made worse by our going early after work, so getting caught in home-going traffic - but not too bad.) We spent about 75 minutes there, being chucked out some five minutes or so after visiting hours were supposed to be over.
Mum, I'm happy to say, was her normal self. OK, so she had a shunt in the back of her right hand, but that's standard procedure the moment medics decide more than a single injection is going to be required. She also had a tube to drain the wound, but she was awake, alert, and not noticeably in pain (some discomfort is to be expected when a chunk has been cut out of you). If it wasn't that she was in a hospital ward, and resting on a bed rather than sitting in a chair, there'd otherwise be no evidence that she'd just had a piece of flesh the size of an egg cut out.
As for possible spreading, that's waiting on tests, so we won't know any more for a week or two. She's coming home today, and my baby sister is heading up to meet her. I phoned my other sister last night (disturbing her as she rootled around under a plane at Orlando airport) to let her know the situation. As far as scenarios are concerned, everything is so far compatible with the best possible outcome.
Tomorrow, we'll be in Ireland. It feels a little odd heading away while this is happening, but everything is currently going fine, there's nothing sensible we can do except get in the way, so pursuing normal life seems the best thing to do.