She does not mention if the bra was too big or too small. If it was too small she should try a bra with a fuller cup- like Wacoal Retro Chic 855186. If the bra was too large she should go to more average cup- like Wacoal Alluring 855107.
When the wire digs in on a good fitting bra like this one it generally indicates that it is the incorrect cup size. She should try this bra in 38 or 40 C and I believe that would solve
comfort driven from TX