This is not even begging you to be involved this is her doing the same thing she has done for over three years
It's begging, as it has been for three years.
The only difference is now she's stabbed you over mistaken identity instead of threatening to drink bleach for compliance.
You are the problem if you enable this any further. You must get off to her doing weird shit for it to go on for this long like some kind of sick freak.