While negotiating may not be your strong suit, writing eloquence is, so I would suggest that you stop talking to her and start emailing her instead. Also, this way you'd be able to collect your thoughts better. I also agree w/sophiesmom in that you are not direct in your requests, based on the language of "she does not give any indication that she would be open to that". A sexual surrogate might be a good idea which you have not voiced, relying instead on assumptions. I take it, you simply did not feel comfortable enough to voice it - again, write it down and send to her, because it is much easier (given your writing aptitude).