Try Amplestuff for socks for your Mom. I cannot find a bra for my daughter. She is a 44 DDD and it is so difficult to get this size. For lots of great lingerie selections in her size, you should be shopping on the web for larger size lingerie. But first, be sure of your daughter's bra size.
Sizes change quickly, particularly in younger women.
Shoulder indentations are caused when the bra construction relies too much on the straps to hold the weight of the breasts and not enough on the actual construction of the cups. Look for bras with wider sides and wider, more cushioned straps. They are often available in lingerie departments. Or, you can look for bra strap cushions. We get ours through Big Girl Bras .