Good morning Pamela Neckpain,
Your daughter is 30 and this sounds more like the behavior of teens on behalf of her friend's Mother telling her what to do with her blog.
As they are on 2 different continents I would doubt that this is more then a close friendship. Lots of people express their love of their friends by saying "Hey, Love you"
If your daughter prefers to keep her face page private I would not worry about it. I do not feel, IMHO, that it is worth getting into with her.
You are her Mom and my own daughter does not share everything in her life with me..................
So, Mom, know she loves you or she would not have mentioned it to you at all.
Take care
Kitt