The storage facility where Monica's belonging are stored and where her drug dealer boyfriend is living is the same storage facility seen in Powerless (2020) where Athena Grant (portrayed by Angela Bassett) tracks and then gets into a fight with the serial rapist.
Illinois is a three-day state concerning rent. Fiona would've had to have given Crystal three days to pay before even filing for eviction. She would then have to go through the courts before she could get possession and then she could call the police, not the marshals.