Chloe is captivated by Herbie, I think she is also in love with him.
In the first picture below I can just here Chloe talking like Dorey from Finding Nemo saying "I shall call him squishy, and he shall be mine!" lol
Chloe definetly wants to keep Herbie the Hedgehog, but he will be going home tommorrow along with Chloe's boyfriend Rambo
