Did my gf cheat when she went to VA?

Caught my gf talking very briefly to a guy she had sex with and he was saying I hope to see you when you come to VA. This was two weeks before she was going.

For context, everything was erased and I found a screenshot of the convo in her hidden folder. I confronted her and it caused a huge fight.

We FaceTime every night but when she went down there (with her family and son). She got to the room that she shared with her mother and son. She immediately went to bed and didn’t FaceTime me two of the three nights. What do you guys think?