I highly doubt he even gives a rats ass about Barb anymore. From his early letters saying that she wasn't his real mother, and instead it was Emanuel, I always took as some sort of cope for fucking her, but given they haven't spoken much at all in this entire year, and Chris eventually giving up, pretty quickly, helping her or demanding people help her, I think he's just done with her for good.
People think Chris loved Barb and is going to try to get back together, but I think it's just like his usual behavior with women in the past, as soon as one's gone, he'll forget about them and move on. Same with Barb. Seeing those two interacting on camera and Chris always getting upset and flustered with her makes me think he's happy to have her out of his life. She was just easy pussy that was available at the time.