DD is in year 4 and has been friends with a girl since nursery. Let's call this friend 'Sarah'. Sara is very dominant, overbearing and can't handle not having her own way. She is very focused on my dd and when dd plays with others at playtime Sarah turns her back, crosses her arms and sulks throughout the break. When my daughter choses another girl as learning partner Sarah blanks her for the rest of the day and acts offended and sulky. But then she runs after her at home time and wants dd's attention.
Dd is quite popular and has many friends in school but she is prone to anxiety and not very confident. Sarah is very bright and her mother is incredibly competitive constantly telling people on the school run about her dc's 'amazing achievements' so Sarah must have picked this up. E.g. Sarah boast to my dd about her amazing school report and how she always scores the highest in class. Another thing I have noticed is that when dd has a play date with another girl, Sarah instantly demands a playdate with the same girl. It's so weird!
My dd is always talking of this girl at home even though she doesn't consider her as her best friend. For example, I told her that her teacher had given lovely feedback about dd as part of parent consultation and that I was proud of her, dd replied that Sarah is more clever than her. When I complimented my dd on her reading homework she says Sarah is already on book band 'x, y, z' (higher).
This girl's tendency to showing off (her mum is a massive show off too), clinging onto dd and sulking when dd doesn't do what Sarah wants concerns me.
Is this something to worry about? Do I need to intervene and how? I am concerned that this girls (and her mums) big ego and self-centred way will undermine my dd's confidence.