Agreed. At some point soon I really hope people we are rooting for (even Jaime at this point) start getting some revenge, otherwise seeing one bad thing after another happen to everyone we like is getting a little depressing.

I do think sansa likes Tyrion, he has been kind to her in the past (saving her from being disrobed by Joffrey's people in the throne room) and was the only person to offer condolences on the death of her father.  I think as a person she likes Tyrion quite a lot, just not as her fairy-tale husband.