has the Doctor tried to do anything? a very good chiropractor can adjust her back.
i broke mine and it hurt for two years. sat on a donut hole pillow for 6 months.
if it isnt' adjusted it will effect her back. so she needs to look into things. it may fix itself, but not sure.
also she should get a pillow to sit on. i got one like the one with the handle/strap
http://www.sears.com/shc/s/search_10...llow&seaxcoc=1