HI Patsy,
Thank you for your query.
Sometime growing teenagers with large breasts can face this problem because of the rapid growth of tissues. Also the breasts will cause a drag on the tissues which might be further aggravating the issues. Of course I havent examined her, but this is a possibility. You could visit your GP and have her examined but in the meanwhile please ask her to start wearing good support bra's which do not allow her breasts to hang much, it might help with the problem for ...
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