Sheila ends up at Austins
After Marty told her to get out of his room, Sheila had started running. She ran away from his house, and kept running, even though she so wasn't in running clothes, and it was too hot. She thought she'd head home, but she couldn't. She wanted to talk to someone. She started to wards Darcy's, but found herself detouring, and ten minutes later, she was in front of a house that bought back a lot of memories. If she wasn't so crushed by what had happened at Marty's, she might have thought twice. But she felt like she needed answers, and this was the only place she would get them. Even though it wasn't the middle of the night, she went around to the back, and started throwing the little pebbles from the garden bed at his window, like she used to.