Julie, I don't think that a C has to be unbiased. An MC has to be unbiased, to be sure. But your C's job is to help you.
Why do you think your C would frown upon you saying that the door is not entirely closed with respect to your H? Maybe she is not asking the question to judge or correct you, but to get you to think about these things.
I think you need to feel comfortable being honest in IC. Maybe you should just talk with your C directly about this. Tell her what you just wrote here. If she doesn't respond the way you would like, or you are uncomfortable being yourself with her, then you should find yourself a new C.
I am sure for everyone, there are things they can't come back from. Only you know what you can come back from, and my guess is you won't really know unless the opportunity presents itself. There was a long while where I thought if H would com back, I would be soooo excited. Now, I think it would be extremely difficult to go there at all, and honestly I might be kind of mad. Granted, that hasn't happened, and who can know until it really happens? To answer your question, I guess only time will tell.
me: 44 XH: 42 M 11 years D10 and S8 Bomb drop 9/27/13 D final 7/1/14