Treading water - time and patience

[NYCPeter]

Well nothing was said on Saturday and she came home again at 4:00am on Sat night / Sun morning.

She got into bed, realized I was awake and snuggled up close to me, then nothing was said about it on Sunday.

Last night - she kept to her side of the bed. Seems she only wants to show intamacy when she feels guilty.

I want to say something, and I don't know the best approach - she knows how I feel about her coming in late and in the past she says "she just lost track of the time because she was having a good time with friends". Do I just ignore? I could just move back to the spare room every time she comes home late.