Penelope is your childish gf. She acts like a child who throws a tantrum when she doesn't get what she wants.

"I WANT THE BEAR!!!"

She cried even though you told her no multiple times, despite that, you wanted to break up with her but didn't know how when you knew she'd throw another tantrum.

"Ba-"

"NO!!!! I WANT THE TEDDY BEAR!!!!!!"

"We're going home."

once you arrived home, you sat her down to discuss something.