You may well be doing the physical ACT of sex really well, mechanically speaking (although her being wet really doesn't mean anything - what matters is if she's having vaginal orgasms from penetration alone!)
However, the female orgasm is 100% MENTAL. The physical act is only a small part - it helps her get there, but she can get there in many other ways, even by you just TALKING to her and not even touching her!
If you want her to initiate sex, then you have to be doing foreplay for a lot longer, all the time. Foreplay can be ANYTHING that comes before actual penetration. This is includes, but is not limited to:
• Sending her dirty texts / emails to build anticipation for the evening to come later
• Whispering in her ear how sexy she looks to you, and describing all the naughty things you want to do to her
• Giving her a massage - teasing her by touching ALL the places around and near where she really wants to be touched for aaaaages before you actually touch her there
The idea is to get her horny and thinking about sex and wanting it, before you even try to initiate it. Often times, she'll even initiate it herself!
However good you are at the physical act, learning to leverage the mental aspect of female sexuality is a whole new world that very few men know how to do. I recommend David Shade's work, which you can find here:
http://bit.ly/iFdky0 I recommend "Give Women Wild Screaming Orgasms" and also any of his material on Advanced Sexual Hypnosis, also stuff by David Cunningham.