That's totally fine. What's not fine is that Bioware basically went with rape as a backstory - and worse, it basically happened to her at every point in her life - that got "fixed" by sex with DudeShepard. Sharing things in a romantic relationship - great idea. Fixing someone's sex-based trauma with sex? Not so great.
I know this is anecdotal, so take it as you will. I've known two women that were just like Jack in personality. They even had some really abusive and screwed up things happen to them since childhood. One of them did end up in a cult, and won't talk about it ever. They would end up in relationships and at first things would be fine. Great even.
However, one of the inevitable side effects of a relationship in general is that eventually you start relaxing and letting down your guard. That's not entirely a bad thing, but your past issues will come out. Happens to all of us. The problem for a "Jack" in my experience is that they find themselves uncomfortable because they start to feel like they are vulnerable. They came from an environment that made vulnerability a very dangerous thing. This leads to them driving the other person away, and they end up right back where they started emotionally. In many cases, even worse than before.
This is a personal account, so take it as you will. It bothered me that they romanticized such a relationship, when truth be told the "Jacks" in my life were better off keeping close friends until they got their head on straight. For the record, one did. She turned out great, but it took her years. She has two kids, lives in the central plains of the US, and is finally happy/healthy enough to be married to a great guy.
The other...did not, and is no longer apart of my life. One of them I had known since childhood, the other since I started high school.