Why should anyone complain about a harmless hobby/passion like watches? I don't get it.
My fiancee doesn't understand my watch passion, either... and why I'm spending so much money on them. But she has never said anything even remotely negative about it. And why should she... it's MY business where I want to spend my own hard earned money to... I'm a big boy and I do whatever I want with my money (and time). She buys lots of clothes, makeup, etc. blahblah... you know... all kinds of 100% useless "women's stuff" with her money (sometimes even using my money lol). I'm not complaining, either. Despite living together, people SHOULD have their own lives, and their own hobbies, friends and interests.
If I were you, I would rather let her go than become "pussy whipped". World is full of nice women.
Just my 2c.