She tends to comes off rude but she has a really soft side because she only loves her Bae Minwoo where she would try to make him hers. 

She has a personality of a cat

Selfish, aggressive, cute, soft, adorable

Gwen Stacy is a calm, composed, and a confident young girl who displays a high level of maturity and composure for her age due to her experiences.
Though Gwen decided to isolate herself from people, due to the guilt and pain she felt after losing her best friend, it did not take long for Gwen to open up to and care about the Spider-Gang, particularly Miles, recognizing them as one of the few people who would understand how she felt.