She made a tiny lyrics mistake in both songs, which makes me think she was quite stressed. Or maybe tired ; she has so many things to deal with at this time of the year.
Too bad coz I feel the performances could have been perfect. It was also difficult to put a lot of energy into Love Song which is a really deep and powerful song, and then to go on with M (that she didn't sing for 9 years on tv), another meaningful song, especially during Christmas time.
So this was not perfect, but still very nice, i'd say 75/100 for the whole performance maybe.

The Best Artists' one was something like 90/100 -but this is just my personal feeling