Rachel thought her plan to get closer to Felix was going relatively well. Joining his band had been a real stroke of luck, even if she was a lot busier now.
Because his bandmates were old friends of his, they all teased each other a lot. She learned things about him that she probably wouldn't have otherwise, such as how he had always been the type to go out of his way to help people. They called him 'Saint Felix' when he did something for someone else that ended up inconveniencing him.
She saw that for herself now and then too. Like when he insisted on taking someone home after they had too many drinks and could hardly see straight. Artie (the one who owned the van) made him clean it up when they puked all over the place.
Rachel wasn't a special case. Felix would have helped anybody who had been in her old situation.