Gwendolyn looks almost identical to Lola, only differing, with green eye shadow, instead of purple.
Gwendolyn prefers men with developed personal culture, expecting them to perform good manners in front of a lady. Especially a gift for the first rendezvous. The much-expected date with Garfield let her down, since she did not recognize it had been Odie in Garfield's body, thus the meeting went bad.
Apparently Gwendolyn's relationship with Brick did not go well, since she decided to end it.