Treat people like you'd want to be treated if you were in their shoes. 

I can't provide any advice as I have never been in your shoes, but it sounds like you and your brother should be able to evict her with enough proof of what is happening.

If I were in your shoes, I would at the very least advise the tenant (via phone or letter) to reach out to his/her social worker ASAP for help on finding new housing.

I'm in your same shoes where I have a multifamily and  I see the tenants doing so many wrong things that I clean up because it is little.

Were I in your shoes, I would order a certified home inspection to ensure you know all the items that will end up costing you money.

That said, many brokers or sellers might negotiate a discount so if I were in your shoes I’d absolutely ask.

We need health to create wealth.Good pair of safety glassesVoltage detectorGlovesDust maskSteel toe shoes, saved my toes a couple of timesEar plugsHard hat for attic work

It's a start to acknowledge I have never walked in the shoes of a homeless person - I wasn't raised by my abusive uncle on the Pine Ridge reservation, I've never been a war vet suffering from PTSD, and I don't understand what its like to have down syndrome or schizophrenia. 

I would try to house hack if I were in your shoes.

Go into the property with a flat rubber soled shoe and scrape your foot across the floor like you're trying to dig a hole in the floor with your foot.