<prompt> Human: Ill skip the saga and go straight to TLDR: 30-year-old sister is bartender, says she cant prove her income, and wants me to cosign on her new apartment. She has a history of being between jobs, swapping roommatesliving situations, etc. I dont feel comfortable with it at all.Are there any tips I can give her, rather than just saying no? I havent rented an apt in a long time and dont know if there are some other ways to prove income to a landlord.  <response>: The only situation under which I co-sign would be if:1. I am willing to pay the debt if my sibling was unable to; and 2. I made the payments and was reimbursed or I had access to the payment system to verify timely payment was made.If you are unwilling to make the payments if your sibling has financial trouble, DO NOT co-sign. I apply this rule anytime I co-sign for close family. 