Guys I forgot the plot

Girl get reincarnated into a spinoff of her favorite game as the villainess and the heroine frames her by accusing the Villainess of ruining her dress. Villainess gets banished by her now former prince fiance. After changing her job class to cleric, she seeks the means to become a Saintess in order to rub it in their face and get revenge. A "gloat in their face" revenge, not an "I'm going to hurt or kill you" revenge.

Thank youuu