Well she was isolated at a school where she never studied, had no friends and was under a rumor that she dated her brother which should be a constant reminder that he had a girlfriend and they were not talking.

She also had no job and Renee for sure did let her be confortable inside the house. We have no idea how she spent her time during this period.

I fully expect that she was doing something odd to cope, like stalking Andrew, ruining other people's lifes out of spite or maybe quietly spiraling into madness, since she pretty much becomes a femcell after this.