I imagine it gets worse as you get older though, and they have also got bigger since she has had children too.Surely if you were in pain for years you'd have it sorted before now her mum is a nurse so would be able to point her in the right direction it doesn't seem to hinder her day to day life .I always thought it was in the clothes dept she seemed to struggle the most with dresses etc not fitting right .
I have tiny boobs and my back is still fucked after 2 kids