DIDN'T FREAK OUT AS MUCH AS OTHER STUDENTS WHEN HE WOULD TOSS THEIR SCRIPTS TO THE FLOOR

[Note: the boxing movie was, of course, Raging Bull, which would likely have started filming very shortly after Home Movies.]
Norris' own Bio states that she was Scorsese's research assistant on Raging Bull, and quotes Richard Schickel's 2010 "Making of Raging Bull" article:
De Niro suggested a period of total isolation and immersion—no phones, no distractions of any kind. They chose the La Samanna resort, on St. Martin, in the Caribbean—a complex of separate villas. They shared one of them and installed a young assistant in another nearby. She was Gloria Norris, a recent Sarah Lawrence graduate who had worked with Scorsese’s pal Brian De Palma on his early picture Home Movies. Better still, her grandfather had been a fight promoter in New England, so she was no stranger to the boxing world. She brought “tons” of books along to help them with research. She remembers De Niro rising early to run along the beach. She remembers him and Scorsese talking out the script scene by scene in the mornings. She remembers Scorsese writing up the new material on yellow legal pads in the afternoons. She remembers “his handwriting was bad, so he’d have to read some of it out to me. It was full of profanity, and he’d get embarrassed saying those words to me.”After that, Norris would retreat to her typewriter, and De Niro and Scorsese would sometimes head out in their Jeep to dinner in one of the several extremely good restaurants on the island.