I'm going to refuse to be tied up during sex and ruin the mood
Why don't you want to be tied up?
It's make me uncomfortable just thinking about it.
If it makes you uncomfortable, you shouldn't do it. Sex is all about consent and you should feel comfortable with everything that happens.
She tries to get me to do lots of stuff I don't want to do.
Well it sounds like you need to have a conversation with her and tell her that your sexual interests are different.