Daas,
“He’s supposed to deposit a get with the issuing beis din which she can accept when she wants.”
Agreed- something definitely does not make any sense, on other hand, who knows with some Rabanim…
I have been approached more than once to sign on a Heter (initiated by some Beth Din of who knows who__ ) , and I refused, based on Rav Shlomo Kluger’s psak in Sefer Alef L’Cha Shlomo (E”H:7) – see link below . I was just baffled how this process works. It is an entire joke. I wouldn’t suggest marrying anyone who has utilized the Heter before you do proper research that it was done adequately and based on legit reasons (or at least a true Posek Gadol) , for that person may still be transgressing a Cherim despite all signees.
http://hebrewbooks.org/pdfpager.aspx?req=1354&st=&pgnum=264
David –
“She suffers from extreme mental illness ‘”
If she is really suffering from an extreme mental illness then she might be in a position that she can not except a Get. i.e. a Shotah” and hence a Heter is 100% legit.
However,based on your comment this is not exactly the case. On the other hand, she might be qualified as one, and you should discuss it with a posek.