DD (age 6) has managed to become firmly attached to another child who a lot of the time is just not very nice to her. The child is bossy (always telling DD the 'right' way to do things) and says horrible things to DD like no one else likes her or criticising her appearance. I nearly daily tell DD not to play with the child but DD says they are 'best friends'. Am I being over protective and unreasonable to want to keep this child away from mine?