CH 1 - Fateful greetings- or hateful..

Pretty and popular rich girl, Lilith Hilton grew up with her parents working for 'Rose Economics INC' where her enemy, Elvira's aunt, had owned. Due to this, they had grown knowledge of one another. They weren't fond of each other and that kept a routine- until middle school. Their thoughts of each other shifted. This year, they thought different. Lilith wasn't the popular rich girl she always was stereotyped as. Elvira wasn't the ugly goth girl she was supposed to be. They were even.. alike. All went well til tragedy had struck in their town, they may be the only ones able to stop it putting their relationship at risk because of what's worse.. the person who caused it.
But who was that? Or, 'what'? And how does it involve them?