It never ceases to amaze me that people seem to expect figure skaters to have the media skills of politicians or celebrities. These people do not have publicists, are teenagers, and spend most of their days in an ice rink with only their coach. God forbid they be a little bit inarticulate once and a while.
In any event, nobody saw this incident or the subsequent exchange between the skaters. If I as a junior ran into a senior skater training for the world championships, and on whom the hopes of three olympic spots depend, I would absolutely feel guilty and ask for forgiveness. In that context, the comment I forgive her, it wasn't really her fault makes perfect sense and is quite mature.