answer:You are very wise not to ban your daughter from playing with the girl outright. it would focus a spotlight on her and your daughter’s attention with it. Keep up the after school activities. let her bring a friend to the pool, but not this one. I would invite the girl to your home for supervised play periods. Then when it is time for her to go home, I would announce that “your daughter’s name” has to do X now. As for the walking to school, can you drive her?