The Slonim Woods complex they lived in didn’t seem to be a traditional dorm set up, as In rooms shared by two people with a community bathroom, or even a suite with two rooms separated by a bathroom. It’s apparently more like a block of four apartments, two stories with (it seemed) two bedrooms each. They had living rooms, and that’s where Larry camped out, so you couldn’t escape him in Talia’s unit. There were decent sized kitchens, and he splurged on them and made them nice meals. An RA would probably notice Dad is around a lot, but unless they shared one of the units, they wouldn’t know everything going on. If the heat got too much, I assume Larry just disappeared for a few days. Or, the most likely scenario, the RA didn’t give a fuck.
Some of the students fell for his bullshit, others saw right thru him. The real brainwashing came during the summer and ensuing years, when everyone moved onto a small apartment he had appropriated from a friend. The Rosario Family provided the main fuel for his ridiculousness. The story of the eldest daughter is just mind blowing.