I loved the whole scene with Lois's father -- I felt nearly as happy with his progress as Lois did! Especially when he was able to actually communicate; that's absolutely huge. And I really like the parallels you've created with Sam's therapy and Clark's therapy. Totally different execution and intentions, but both vital and essential, just the same.
As I'm sure everyone was, I was shocked to see Shadbolt did not do any surgery. Did Trask invent the whole thing? I kept waiting for Lois to ask Clark about it; it would be traumatizing for him to relive it, but he'd likely be the best one to clear up the confusion. I also think it was brilliant of Lois to let Shadbolt read Trask's diaries. He's already slowly coming around to her way of thinking, but given his reaction to Trask's surgery entry, I have a feeling seeing for himself how delusional Trask was will have a profound impact on him. And hopefully he'll be able to provide Lois with more information than she would ever be able to get otherwise.
As for Clark, I don't blame him for not wanting her to wash his hair. For a man who hasn't been touched in seven years, except to be beaten, I can only imagine how that much touching would be overwhelming. And his feeling that his hair is too disgusting for her to help with makes sense, too. Plus I imagine that even if she were to wash it, it wouldn't help much -- it's probably completely full of dreadlocks by now. Shaving it off will likely be his only option, but he's astute enough to realize that a show of his powers like that would be far too dangerous. Perhaps it won't be done until after his escape? I would imagine he'll look different enough that it will be a great disguise!
And finally, about the previews, please keep giving them. I don't read them until after I've posted feedback, so they are a nice little treat to carry me until the next chapter is posted. Plus, as others have said, coming up with theories, even when they end up being way off base, is half the fun.
Kathy