"You're beautiful, you can't stay in the house all the time".
What does her looks have to do with staying indoors?! A reason to go out on a regular basis shouldn't have to do with whether a person is beautiful or not, it's to do with sanity, looks aren't an issue.
That comment of Lillian's had to be one of the worst piece of advice on how to stop being Agoraphobic, for real.