Is it possible to file Chapter 13 without a job?

Your friend can file bankruptcy even if she doesn't have any job. She can qualify for Chapter 7 bankruptcy or may have to pay less to her creditors in Chapter 13 bankruptcy. In fact, her chances of qualifying for an emergency fund increase when she has no income. However, her Chapter 13 bankruptcy case can be dismissed if she doesn't have enough income to complete the repayment plan.

Yes, she can qualify. but make sure she can repay the loan within the stipulated time. Ask her to find a good job as soon as possible.

Yup, she can. But she needs to start earning soon, as she has to repay the debts with her income.