Forget about what happened at the Vampire's place, she just didn't want to remember the embarrassing incident she didn't like. And most importantly she has also taught Dean a lesson, whatever the reason she still doesn't like it when the Vampire drinks his blood. And she was satisfied to have thrown the Vampire even to the point of destroying his laboratory.
Although she was quite happy that what the man had done helped her, the chains that bound her ties to Frey's were untied. And the Mate marks on his wrists are starting to look normal too. Then she also gave Dean an additional gift, a very useful thing for the Vampire.
"Caroline, are you sure?" Jeremy asked again, the Beta began to doubt his decision to meet Frey.