Absolutely there is help on this subject.
If her job does not require her to be a member of the party, she should quit the party. She needs to be honist at the interview, and present evidence that she is no longer a member if they ask. Most who are honest experience a 4 month delay to get visa while extra name check happens, but they do get the visa. In my time at candle I have seen several people deal with the issue and get the visa. It is a speed bump.
I highly recomend Candle for Love BBS for all things China Immigration matters, very detailed FAQ and information about Guangzhou Consulate.
http://candleforlove.comhttp://candleforlove.com/forums/index.php?showtopic=19111 (Communist issues)