Probably just busy. I don’t recall her mentioning anything that would be the cause of concern. Now, if she doesn’t show up in the next month or two, then maybe we worry. But folks come and go as they please. Many will be gone for years without anyone mentioning it, and then they’ll show up again like no big deal, like ChainsawAsh for instance.
I wouldn’t worry normally, but the last post she made was about the bad weather which struck the UK.