<human>: Can you provide a brief overview of the text?

Hello everyone. 
The girl I am friends with (jenny) is in a ton of financial trouble. First off she is in the middle of a divorce. Her ex(Jason) and her took out a 30k personal loan and spent it on a tool for Jason's business. Both their names our on the loan. 
Things got a bit bitter and Jason has fallen on hard tomes( he is a meth addict) and has stopped paying on the loan. Jenny keeps getting calls from the bank about paying the loan but she obviously is unable to. The machine is worth 30k and the company will take it back, however Jason will not give her the machine to give back to the company. 
So what is her legal recourse and what can she do?  Jason is not concerned about money or credit as he doesn't have a pot to piss in but it seems like he should have some obligations as the loan could be paid off simply by giving the machine back. The loan is again unsecured but the bank is harassing jenny for payment and she is unable to pay, nor should she be solely responsible it seems. She is attempting to take her name off the loan but as you can imagine he won't sign the papers. 

So what should she do?  I told her to declare bankruptcy as her car is paid off so she doesn't really need credit and made so many poor choices with this guy that she has to just start licking her wounds. However, part of me wants to tell her to just ignore their calls since the loan is unsecured. It seems as though California is a no fault state and that the bank would not be able to seize her accounts anyways. 

What should I tell her to do? Please help as I am baffled.  Thanks!
<bot>: if you have a 30k personal unsecured loan that you're consigned on and the other person spent all the money and won't help pay, what should you do? What recourse does the bank have? (California)