Wife had affair with co-worker, took her back twice

I found out that my wife had an affair with one of her co-worker (he was recently divorced). For months she has been disappearing on Saturdays and coming back 4 hours after, and always works late. One day I placed a phone in her vehicle and hid it behind the baby seat and turned on the voice recorder/GPS, sure enough I heard really really rough sex, which I cannot get out of my head.

I confronted her about it the day after, she was worried that I would tell her family about it and agreed to work on our marriage.
She said she ended it with him. However, two weeks passed and not a single sorry from her, she doesn't want to talk about it and was treating me literally like I had the affair.

Again, I noticed change in her attitude, put the gps in her car and sure enough she went to his house, picked him up and went out to lunch.

This time I flipped, and told all her close family what she did before I confronted her, and after confronting her, we both agreeded to a divorce.

A few days later, she called and told me what was going on with her and him and she has feelings for him and that she is going to end it and said that she is going to unlock her phone (messages, whatsapp etc). She also said that it was not sex, but a rough something else. (which I think is another lie)

SO
I took her back again, It has been a month and we are kinda doing good, I am still in alot of pain, but she is showing good signs that she wants us to work, but again does not want to talk about it.

My issue is, she is still working with him seeing him everyday, her phone is still locked, although I am not seeing her chatting on it, when I ask her about the phone lock, she reacts and throws it in the bin .

Everyday I wonder if she is really over him, I think that they working together will make her want him even more (forbidden love). She sits next to him.
I dont trust her or believe anything that she says, I just have hope that we can be a family again , mainly for the sake of the 2 year old.

She will refuse counselling, I sometimes cannot get over it and just pretend to be happy.

I dont know if she is going to play me again or if she is genuine. Sometimes I feel like giving up, and other time I feel like she is all that I have.

Anyone ever went through something like that, any advise?