Finding housing and treatment for mentally ill sister

Hello. My sister (27) is requiring a place to live by the first. She has a history of anxiety, depression, and bipolar disorder. She has moved from home to home, many times getting kicked out, throughout her entire life. She has a difficult time agreeing to any sort of therapy or treatment.Given the current stay at home orders, she cannot work or afford rent. My dad has been paying her rent the last couple of months. She wanted to move back in with dad, which he wanted as well, but my stepmother and two brothers who also live there do not approve as they do not get along with her. He is considering buying a mobile home for two reasons: 1.) She has a dog she’s not willing rehome and has a history of receiving noise complaints. An apartment is not an option. 2.) He bought a condo for her years ago, and she could not keep up with the bills. Instead of paying the bills she stayed with my mom “temporarily” so she could get back up on her feet and pay her debts off. Eventually it was found she had no intention of paying her debts and planned to abandon the condo and make her way into permanently living with my mom, until my mom kicked her out. My dad was later forced to sell. We are both aware that she’s most likely going to abandon the mobile home but she will not have to worry about noise complaints.Kicking her out and letting her learn on her own is not an option. SAFETY is first, and she is not mentally capable of learning the “hard way”.Given those circumstances I would like some input from those who have experience on other options can be considered. She cannot live with me as I have a child and am not willing to expose my child to the environment she will bring about.Again, from people who have experience, what kind of plan can we put in place for her to commit to a long term therapy if my dad finds her a home? I was previously a psych nurse and believe inpatient is best for her, but I know it would be too much for her and she would not commit. I am looking into outpatient long term therapy.—My first post was submitted early today and now that it’s evening, here is an update. She moved her belonging into my dads house after he denied her request (she has the garage password). My dad respectfully stated she needs to pack her things or he will call the cops to have her leave. She threatened to shoot him with a gun and destroy his businesses. I don’t know if she has a firearm. She eventually left. I am telling my dad to call the cops to make sure her firearm is revoked and most likely legally mandated to have treatment. I asked that he changed his password, which he did. Currently he is contemplating that decision as I know it is difficult for him. I am reminding him that safety is first as well as establishing strong boundaries. I am doing my best to support him now.Thank you. ❤️ via /r/Parenting https://ift.tt/2Xbs5rU