On Feb 4th lady filed and return was rejected because ex claimed dependent and claimed EIC on her child that she has right to claim everything on.  Refiled electronically on Feb 12th and accepted.  Her refund page at IRS says her refund has already been issued and should be in account by 3/03.  So if you want to paper file, go for it.  But there is faster alternative if you haven't paper filed yet.