We are together for 2 months (traveling together, so it's quite intense) and she is afraid of disappointing me when it comes to sex.

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Whenever I want something and she doesn't, she can get stressed about my reaction if I seem a little butthurt. Generally the sex is great, sometimes I push for new things and can be Rambo about it. She told me it took her time to be able to tell me she doesn't like something and I actually had to ask her several times to be straight with me if she doesn't like or want something.

I do realize I need to tune down a bit the pervert Rambo stuff, do it slower, but what worries me is that she might still not tell me if something is wrong and start resenting me after a while. She is Asian (and not American-Asian god forbid) so I think the fear of disappointing me as her man is something deeply cultural.

On one hand I like her, beyond being attractive she has some great qualities, so if she doesn't surprise me, this might lead to a serious relationship. On the other, I don't want to be naive since her problem of not saying things that might disappoint me might turn into a big issue. I don't want to be beta, asking about every little thing if it is OK, but we do need to talk.

How would you approach this?