DEF rec forms can only be gotten off their website's sister side, like ours, so she doesn't have a snowball's chance in H of writing a fake rec. I mean, who's going to print one off for her? I still think she could do quite a bit of damage, unintentionally, by offering to write a rec and then not following through; people do get desperate for recs during the summer. She probably doesn't know how damaging it could be for a PNM to take off for Auburn or Georgia thinking they have their DEF rec taken care of and it's not.
I'd love to take honeychile's suggestion about giving her a DEF gift but I'll probably have to go the passive aggressive route, as suggested by APhiAnna, or the one suggested by CutiePie2000 so as to save face for her and keep family peace. Ironically, she would make a great AI and probably throw herself into it 100%. But dang! Why is she embarrassing us all like this?