The actual diagnosis isn't really the issue. People with as little as one symptom can be awful, people with many can be terrific.

It sounds like she is about 30. At that age, having children now is not a pressing biological issue for most women. Even if you were to marry her now, my thought would be to wait for a bit on children. Once there are children, you are permanently tied to her (whether or not married). It isn't known, I expect, how she will react to having children. I imagine it would, at a minimum, raise issues of childhood trauma. I wonder what her therapist would say about her having children right away.

It is also interests me that your friend isn't willing evidently to accrpt the therapist's modest advice of waiting a few more months.

No matter how good things are, you are hesitant. I would suggest giving strong consideration to that voice that is telling you to wait.