Cara is the sweet and cute (former)virgin... and we already have Layla for that.
Layla is much more present in the story, has a better build up, her mom and dad are much better, the humor with her is waaaaay better... and Layla comes with bonuses like a hot latina friend and a fun rivalry with her teacher.
Cara and Layla represent the same archetype, but Layla wins in every category.
I do like the way Cara is becoming much more "experimental" with sex since having her first time, but... if Layla keeps going towards threesomes, playing with other girls route, Layla will absolutely own her here as well.