Sometimes the best remedy is to TALK, talk it out. Talk about expectancies, wishes, compromises. When that does not work there is the .... I am parent, I pay for the extras, I lay down the law. Amen

My daughter is 26 when she was a teen she had a set time to "chat with friends on the phone" the rest was taken up with school, family time, church, etc.
Wish you moms Luck, I have to go through all this stuff again with my 9 1/2 yr. old who thinks he is 33, uughh.