Exactly! And isn't that just terrifying? The one, your team mate is working against you.

I'm not saying at all that your partner is anything like my ex. I just felt I should put it out there, you know?

My advice would be to have a serious chat with her. I guess, don't put it like "Hey I'm thriving and your not" but more like asking her if she's happy with life because you've noticed she's down or something.

Premarital counselling is fairly common these days, maybe you could suggest that.

Just, whatever you do, if you think she has some underlying issues that could hinder your safety be it mental or physical - don't stick around to find out.