I had this situation before happen to me, and it led to the girl disappearing.
When a woman wants to f3uck a guy and she is in her feminine there is no reason for her no to make a move or initiate sex. I had many chicks initiate sex before, probably she got complacent or bored.
I agree with
@soulforge that a drive of 10 minutes does not justify her not initiating sex. Especially when everything is paid.
On the other hand, is either you bang and that's it and you don't care, or if you are looking for anything more then personally I would never tell her anything in regards to her not initiating sex what I would do is remove her for two weeks by being busy and let her chase and arrange sex again two weeks ahead.
See if anything changes if not the chick apparently does not give a flying f3uck. Not sure before if she was initiating sex? and now it stopped?