Kate tries to cut a deal with Dan Norton

Kate goes to lawyer Dan Norton's office to offer him a deal about her and Aaron's blood samples. She says she will comply with his request if his client agrees to meet with her. Dan says he's meeting his client later that day and will take the offer to him or her. He's very careful to never let anything slip about gender or any other details. He tells her that his client's answer will be no and that she's in no position to negotiate. He also says that she should be prepared to lose Aaron.

At this point in the episode, we don't know who his client is, but whoever it is, they obviously know a great deal about Kate and/or Claire.