Need Help (new thread)

[AU Bob]

I need some advice!
When my wife walked out she did it while i was at work. She told our daughter that was living at home before she did it, obviously she was shocked and upset, she packed some things and went to stay with one of my other daughters, she was there for 8 weeks until things settled down and she decided to come home and live with me.
This has had it moments her being 16 im sure most of you would know what its like for them at this age!
She has been spending a lot of time with her mother for the last 6 weekends all day and staying over. I have asked her to do stuff but she seems reluctant. I think it is because her mother is spending money on her and taking her places. Buying her affection?
I think my daughter has put the goings on of her mothers relationship with OM out of her mind. She knows about him and dose not like it, but it dose not seem to affect the relationship with her mom.
I am concerned about what to do. I would like to have quality time with her instead of just talking to her at the dinner table and when im taking her out for driving lessons in the afternoon.
I feel her mother is trying to buy her affections and by doing this in time hope that things with OM will be forgotten or blow over!
How do i explain to her i would like more quality time with her in weekends without putting her mum down? I feel her mother is trying to manipulate her.