Well lol I say girl !!! I have had this child lol ! She is bored and probably spoiled !! You could fix the behaviour with time but if parents aren't on board I say next too !! Some girls are nosy , mean and generally like to cause drama . I have raised 2 girls who were so nice !! But noticed in friends behaviour ! I watch my dd who is 5 and she is quite different from the first two ( she's def more spoiled !) so I am on her to watch she respects other children !
You will have a lot of work to do with your dcg ! And as she is part time I think I would define choose to term if it was me !!