hey Kristi!!
They are a little cold cause Robin is a replacement for a team member that they lost. And being Witch Hunters they are a little wary of witches. Things will lighten up.
Dojima, the blonde, is a bit of a ditz. Her father is very powerful. He got her the job on the STN-J. And frankly nobody can fire her. She's a good person. But she doesn't take the job seriously.
I hope that helps. Any more questions?