Cheating Wife - "My wife got a new phone that I paid for.."

My wife got a new phone that I paid for and still has her old one in purse and it's been in there for the last two month, will the alarm went off this morning and I got it out to turn it off and was wondering why it was even on or in her purse.

So I started to look through just to see why it was on and open text message and saw that she has been talking to a girl name Traica that's really a guy and they were talking about taking a shower together and she wanted to smell him on her.

We have a kid together and he(son) is my world and this guy she has been texting lives about 8 or 9 hours away, should I worry about her leaving me to go there to live with that guy or what should I do.