Yet Another Isekai

Lizzie wakes up in a room that's not hers, in a body that's not hers... and realises she's in the body of Marchioness Serena Everspring, the villainess from an online novel she just finished reading, and who isdestined to die ! What can she do to survive ? Will she be able to win the heart of the Crown Prince ? And what if... she doesn't want to ?