Speaking from experience, it can be very difficult sometimes for a woman at work. I used to work in a hotel, where I was hit on all the time too. You have to be very pleasant to paying customers of course, which can make it difficult to turn men down without upsetting them. In my case, I had a very encouraging husband at home, who would have had me fucking every single one, so at least that helped me, but I couldn't do that, after all, I had to do some work! But when they ask you to their room at the end of your shift, there is always plenty of temptation. And to be honest, if a good looking nice friendly guy asks you back to their room, it can be almost impossible to say no sometimes.
As for the original post on this thread, I would imagine that her change in the marital bed does suggest that she is getting some sort of inspiration from someone or from somewhere. Is she repeating experiences she has had with other guys? It does certainly sound like it. Speak to her about it, let her be in no doubt that you are okay with it, and would be happy if it was true. She might surprise you.