"Well, that makes me feel a little better." It meant a lot to her that he didn't seem to think she as crazy. Or if he did, he didn't let it show. She needed that right then, because she was really starting to question herself, and her sanity.
She imagined anyone would, in her position. He was in the sasme sort of position, though, and he was telling her basically that she wasn't crazy. That trying to reach her boyfriend, even when she knew the calls wouldn't go through, was normal.
"I'm very glad I don't have kids. That would be tough, to be away from them."