my son is still drinking milk and he's 5 years old. he had milk twice in a day. once when he just woke up at 120ml and once before he goes to bed also another 120ml. he has 3 meals a day and snacks in between.
i dont know about other parents but for myself i believe milk is very important as part of the children's growth. for their bones, teeth, brain and etc. hence the reason why some milk has indication for 5 to 7 years old and some are for above the age.
if your child is still drinking milk, let her be as long as she is also taking other source of nutrients and not replacing any solid meals for just milk.