@Kristin ******
, keep in mind if your friend has an extensive entry history to thailand already and is flyin' in on a 30 day visa exempt entry she could be asked for proof of funds (20K baht or the equivalent in CASH), proof of onward travel and proof of lodging.
IF she is gonna fly in visa exempt like that and she gets questioned she should have her Non-B paperwork ready to show saying that she was denied because it was correct and she's gonna get it corrected and try again.