If she is living on the edge encourage her to get on a list for subsidized housing. 

House hacking a multifamily property is a great way to start in real estate, and your plan to live in one unit while renting out the others is smart.

I did a brief search of the Yonkers area and I know it's a high cost of living area. 

These are the options we're currently thinking of:Option 1: Sell the house that we most recently lived in when the current lease is up in June.

Many of the buyers rehab the property and live there for years.

However, I don't feel the majority of tenants are considering that when trying to find a place to live.

I suggested that the agent represent themselves --- that suggestion started a lively discussion on the subject of self-representation on real estate deals.Do you self-represent on real estate deals where you are the buyer/seller?

I have an aunt that lived in California and worked as a traveling nurse.

Invest in a security camera—we had a break-in where someone lived in the house for days and stole appliances, which insurance didn’t cover.

I doubt its a problem because if you told them a duplex im sure they assume you will be living in one and renting the other but its better to check.