Bagster can be a surname, originally referring to a female baker.
Thanks for your input. My knowledge of it comes from a matter a few years ago when a barrister from Blackpool in the UK called to refer an client who had a US tax problem.
In describing the client, he said, “I do think I should warn you, so you are prepared and not surprised, that he is a “flaming bagster, but look beyond that and you’ll see he is a good sort, and pays his levies on time!”
When I asked what a “bagster” was, he diplomatically let me know it was a term over there for what some call “teabaggers” here.
Unless she is a baker, the question them becomes, “why did she adopt that name”, and I’m afraid we might well know the answer.
Be well.