Personally, I liked Chemmy - especially the way she cared about Sebastian when they did the Ultimate Skills Challenge, shouting out the moves to try and help him, and hugging him afterwards. She struck me as a team player, and a nice lady.
That said she often looked wooden, no doubt because she has no dance/acting experience, and she rarely pointed her feet, even if she had a lot of power and stability, and probably was in fact quite a good skater (according to Robin & Katerina and I trust their judgement).
All that said, I think she skated well on Sunday night, and she acted the part and it was the first really good "all round" performance. She came into her own. I think it was time for her to go, because the standard is remarkably high all round, but I also think she should be extremely proud of that last performance.