If Solas trusts Cole, how bad can he be.? Horrible he's awful horrendous gross demon boy. Solas said so and Karrie DOES NOT want to make Solas upset. he wanted to stay and he did kinda come in clutch at Haven so she owed that to him and 2. She only kept him around after that because 1.
In truth she was about to slam the Haven gates in his face then she looked behind him and saw a fucking 10 foot tall magister and his army of templars and she was like 'o shit nvm bro u right my bad my bad' and said fuck it come inside lost puppy dog.