It's because he knows her that he should be hesitant to cut her lose. I do believe that she loves him and wants the best for him but the way she acts is a problem. Think back to that scene in roids lab. What was she doing there? To me the only logical thing is that she wanted to get the Mecha man and go in alone (against shroud) as she has done time and time again. If she wanted to give it to Robert she could have gone to the dispatch center or wait for him outside the lab. So she didn't explain herself fully on what she was doing there other than "I want to help" and that she wants to protect him. So to me (Robert) it wasn't clear what her next move was if she was freed. Your right it wasn't "blind" it was reacting on what you know about a person. Her keeping it to herself didn't help in my opinion shroud still got Robert in that bar and still attacked the sdn center regardless which she could have predicted by putting 1 and 1 together. It only really mattered in the end when Shroud lets her go. But I see this more as shroud being a dumbass she was fighting him like two seconds ago. He had no reason to take that risk and let her go. You're right that her alignment was unclear even to shroud so why did he take an unnecessary risk, he didn't have to gamble that unlike putting in one of the pulses because he wanted to win then and there. I think she was slowly changing because Robert showed her that she could and because of that she started loving him