I think it would be beneficial for you to ramp up the GAL and leave the house in the evenings several times a week. You mentioned that she has been going out for drinks before she comes home. I think you should be ready to leave when she gets there. Go out and do something. Be vague. Tell her there are some things you want to do and leave it at that. Make her wonder what you're doing while she's picking out clothes and rubbing stuff on her face...
Me: 38 W:31 Kids: S16(mine from previous R), D10, S9, S4 M: 10 years T:12 years BD:Jan 3, 2018 W moved out: Apr 13,2018 Filed for D: Jun 2018 D final: Sep 2019