stn treatment question

Sorry if this is the wrong place but i have a staghorn with stn it started getting better then started to go south even quicker I know the easyist thing to do is to frag it but the piece is just a frag its self so i bought some super glue but was wondering if you just glue around the tisssue line where it is receding any awnsers would help

 

IMO you should frag it. I would frag a quarter inch into the healthy tissue to prevent it from spreading. You can keep the other piece in case it makes it, but I would do this asap. I'm sorry for your loss.