Finnish Lapland

We went  to Finnish Lapland with high hopes to see the Northern Lights January 31 - February 6, 2016. There was a  lot of snow, although it wasn't too cold (minus 18 degrees at the lowest), but we did not see the Northern Lights (just maybe a glimpse of it). There were a lot of excursions planned (reindeer sleigh ride, snow mobile tours, snow shoe walk, Northern Light tour, huskey sleigh tour).
Unfortunately on the 3rd day I mis stepped in the snow and my knee got twisted, so for the rest of the vacation I couldn't move at all. DH Rob and DD Joyce had to go by themselves to do all the tours, while I could only sit and rest in our appartment. How unfortunate can a person be? Back home it turned out that my meniscus raptured on 2 places, it has been operated upon, but still hurts every now and then.