That is the type of situation I have seen occur on rare occasions where the offer of prayer was rendered more like a parting shot across the bow.I'm gay, and I've been told by people I know that they'll pray for me in a context that makes it clear that they're praying for me to be straight or "repent" of my "lifestyle." That's annoying, since there's nothing wrong with gayness.
If people say they'll pray for me with genuine good will, then I think it's nice.
It isn't common, but people seem to find their ways to get their pound somehow.