Try this: Lilith heard about a high class party up state. Things were getting a little tense in Uni, seeing that there was a recent murder and she was interview by the cops. Maybe a little party would set her nerves at easy. Since it's up state, she remembers that's where Maria used to live, curiosity took over and she just have to find out more. There is two ways you can connect Lilith to the church, either by talking to the parents or you overheard/heard/told by Maria that she's part of/used to be part of a church.

I hope I helped :)