Making my girlfriend orgasm.

I'll give you a slight background info to boot.

My girlfriend upon dating commented that she was "broken" that she couldn't orgasm/cum she said that she wasn't sure why and feels that it might have been because guys didn't know what they were doing.

Upon our first time having intercourse she came within 2 minutes, she was on top and very close (was very hot first time). Since then I've been experimenting with foreplay which I believe I have a fairly decent knowledge (well enough) and she is close to orgasming multiple times when we foreplay either with insertion of fingers or oral or playing with clitoris. Although she won't cum it just doesn't seem to quite get their (she presents the same and she is really "focusing")

I've also since noticed she can only orgasm during sex when she is on top, I'm unsure if this is because of the pressure it puts on her or if it is because she's in control.

She is really worried about this from a perspective that she feels like she is broken as it's been this way since her first times. I just personally want to satisfy her and explore, I don't care about the machoism all I care about is that it's enjoyable for her (which it seems to be I'm just missing the final hoorah)

Do people have opinions on what to try, what to do? She has said to me previously she has trust issues, she can't trust partners which I thought to be a massive influence (although she's stated to me she does trust me)

As far as I can possibly see, it's about getting inside the woman's head as much as the foreplay physically. I have told her to relax it's not just a goal it's about the fun and sharing. It's about trust and she needs to trust that I will not hurt or violate her in any emotional or un wanted physical way.

As I mentioned she orgasms well (and is actually a little shy about it when she does) when having intercourse but only in certain positions in which she is usually on top.

I'm not looking for advice in a selfish respect it's honestly all about trying to make this girl feel more comfortable and I'm looking for ideas and possible situations people have had which are similar.

Cheers - reksat