SFH in pre-forclosure; owner recently deceased. What should I do?

[Obed H. Bey]

I'm interested in house hacking a MFH but I just found out about a SFH across the street from my mother. Previous owner passed away and per Zillow it was scheduled for auction as of 2/6/19. Listed at 90k with a Zestimate range of 127k-165k.

I'm a newbie, never did a deal but learning (thx BP!). I feel like a deer in headlights. WHAT SHOULD I DO?