Exactly... As much as we would all like to convince everyone around us to buy Bitcoin, you just can't force it upon anyone. I get that some people are pushing for converting others to up the value in Bitcoin, but it's just not worth the effort and solidifcation of Bitcoin's poor reputation.
Now, that's just in regards to friends and acquaintances. When it comes to your SO, you absolutely should NOT be trying to force them into anything financially. There is absolutely nothing good that will come from forcing your reluctant girlfriend into Bitcoin. If she makes more money than you, OP, she probably isn't a clueless person.