Quick question about the plot of American Horror Story S2 (spoilers)

I wasn’t paying full attention to the first episode. Why does the head nun want to keep the lesbian in the asylum? Did she see something she wasn’t supposed to see?

Head nun says that the lesbian was trespassing, that she was there under false pretenses. She didn’t really want to write a story about the bakery, apparently that gets you locked up. No real reason as to why she wants to keep her there, but one would assume that head nun thinks the lesbian saw things that she shouldn’t have. Head nun’s using the fact she’s a lesbian as a reason the courts will accept. Gonna go with head nun wants the lesbian in the asylum as that’s what the storyline needs. Lesbian did see people locked up.