This was the payment that was to be made with her extension.  I made sure the extension was filed an accepted yesterday so that part is taken care of.  But what should I do about her payment?  Should I advise her to put a 'stop payment' on the check and resend it today?  Or just wait on the IRS and see what they do?  I've never had this happen before so I'm not sure what to expect?  Any help would be greatly appreciated!