Sometimes I think one should ask the s.o if how would they would feel if you quit doing what THEY enjoy. But on the flip side my ex did/ said this to me.
Its a hard situation to be in. With a fetish of this magnitude where I am concerned, I just couldn't meet my Ex halfway with what he wanted to do anymore. I am strictly a Tickling Fetishist and I'm not apologizing for it anymore. It got to the point where I just decided to leave him. (For many others reasons besides tickling though.)
I'm not saying leave her. But you need to think about how much this affects YOU. I mean you entitled this thread "Horrible Situation". That's a powerful statement. Can you live without it? If the answer is no... well I'm sure others here will have some advice for you besides mine which is to THINK about a life without her in it. Not do it. Just think about it.
. I've tried giving advice on "No you can work through it together. Therapy etc. On and on. But... I gave up when my own e Bf decided to tell me I needed to be hospitalized because of my fetish. That I spent "too much time thinking about it". Fuck that.