First of all, did you pick up your bedroom technique skills from porn? Because I have to say, your woman is probably speaking the truth in that she wants you to cum quicker, but a lot of men think we want longer, harder and faster. (Some do, some don't) I had an ex who mastered the art of holding back and banging away for hours and oh it was boring (and sore!) I mean, you admitted it yourself, you want to see her orgasm, you want to see her lose control with wild abandon and be orgasming all over the place (I imagine) so why would you assume your woman just wants it to be over with, when she asks for the same thing?
See, I dunno about other women, but if my guy cums quickly, or even seems to be struggling to control himself, THAT is arousing. It makes me feel like "omg I am so hot he can't resist!" lol. If on the otherhand he is just thrusting in and out like some sweaty metronome, concentrating on not cumming and therefore not making any sounds or anything....boring imo. Maybe I am biased, because quick orgasms turn me on and they turn me on wayyyyyy more than long sessions, where I just get sore. I don't know your woman, or her reasons why she says "cum quick" but I do know it is a passion of mine, so much so I seek it. Maybe your woman is the same as me, maybe she doesnt like sex, maybe its another reason.
Also, I am with a guy now who is a giver. Like you, he would happily spend hours pleasing me. The problem is, womens arousal is, for the most part, psychological. Its all in the head, in other words....and therefore if I want to be SUPER aroused, I need to see and hear how turned on my partner is. I need to have all these images in my head of him moaning or writhing or....whatever, but if he just jumps straight on me, touching, massaging, licking...the works...that is physical stimulation, not pyschological stimulation and so I am having to try and rev up my arousal based on stimulation that is secondary. Based on stimulation that I would not have chosen myself. See, I am a giver too. I NEED to have thoughts and images and sounds and basically all the stuff I can build thoughts and fantasies around. None of this comes from him touching or pleasuring me, (Him pleasuring me physically is like the thing I want AFTER i am aroused with pyschological things) so it actually comes from me pleasuring him...watching him get off, seeing him in the throes of pleasure. Maybe your lady needs this too and although you are trying to please her, it might be the wrong angle your going for. You might find that she is most aroused and turned on by pleasing you first, to get the thoughts going.
She gives amazing blowjobs: Do you need any more proof that your woman is a pleaser, seeking out pleasuring you first, to get aroused herself? I love giving my partner blow jobs and anything else that will drive him wild. This turns me on so much more than him going down on me. Of course, by the time I have given hi a blow job, or any other extreme pleasure....I am so READY for him to please me at that point. If he starts on me...it takes much longer to get worked up.
On top of all this, if she is not very experienced, she will feel very shy about coming forward and telling you her wants and needs. I think she has started (telling you she likes you to cum quick etc), but this is a slow process that we all take, gradually coming out of our shells over our sexual lifetime. You can encourage, talk positively (avoid arguing about it or negativity) and she may come through more.
When I was younger, i found it very difficult to cum in front of a partner. I think it is generally harder (and takes longer) for women anyway and when we are laying there receiving all this attention, we can end up having negative thoughts (I'm taking too long, hes gunna be bored etc) and it really does stop us relaxing enough to get there. Ive had periods of anorgasmia since my early days because as I said above, womens arousal is very much a pyschological thing and our thoughts can be the thing that gets us there, or stops it altogether) All I can suggest is reassure her often how much you love pleasuring her and ask her to guide you. Ask questions, does that feel good? Do you prefer it harder? etc. If she doesnt know....then she probably has little experience masturbating herself and you should encourage her to try that, alone (it helps take the pressure off) and as she learns about her body, she can teach you.
This is getting long. Im gunna cut it here. I hope this helps a little!