Found a text suggesting lunch with guy from gym. Should I say something?

So I pick upped my girls phone to check the time and the text screen was open I saw a text to some guy with an emoji under it so I clicked it. She’s training to be a CrossFit coach. I don’t do CrossFit I lift heavy. so I never went to this gym or seen these people.

He gave her a book to study for the test and she said thank you when can I take you out to lunch? And he said you don’t have to do that but I’m free whenever for you. Let’s avoid the snow with a smiley face.

Now if I was doing this she would def not be cool with it. Even if I suggested it. Should I bring attention to this? I think the fact that she did it and prob sees nothing wrong with it but will chastise me if I did raises even more of a flag.