The mother of DD(15)'s boyfriend(17) asked her to join BF, his sibling and herself on a trip to the cinema this weekend.
DD and BF have been going out for a few months and right from the start she was very friendly and welcoming to my DD. For example, on their second date, which was at his house, she told my DD to choose a mug from their kitchen cupboard to be 'her' one. Over the weeks, DD has had a few texts from the BF along the lines of,"We were wondering if you'd like to join us for tea- we're having a takeaway?" or, "Mum says, Would you like to come for tea tonight?"
Once she said to my DD that DD and her should "go bowling, so that we can bond." (Maybe she wasn't being serious).
Another time on the way home from town in my car one afternoon, BF checked his phone and found his mum had texted him to say, "Ask * if she'd like to come back with you for tea".
One evening when DD was at his house she suggested to them that she would phone me toFtry to persuade me to let DD stay there for longer than the time that we'd agreed.
Also, she kindly let DD have first dibs on an unworn garment that wouldn't fit its intended recipient.
Sometimes I get the impression that she's more keen on my DD than the BF is. AIBU to feel uncomfortable about her?