There are various reasons (below are 2 but you guys can probably come up with more) for a woman to stop giving FS extras (as posted "she won’t do any of that stuff anymore") and move to another place where such extras are not required where she can still earn a living — albeit not as much as before:
1. legal For various reasons, perhaps a brush with the law, that she found terrifying, humiliating and expensive and not wanting another. Or perhaps immigration status has expired and she wants to keep a low profile from the legal system by working in a legit place.
2.medical I can imagine certain medical conditions, especially an acquired one, that could cause painful vaginal sex and putting her money maker out of commission for weeks at a time, occurring unpredictably from time to time.