i'd have made her snowboard with extreme force

(i.e. picked her up and flung her down a snowy hill)
he he
Sorry mate that was a bit
As to the answer to your question, i personally have not found anything that will repair such a thing, although i have found that when i was cleaning a mates car using meguirs two stage leather cleaner, it made the scratches and belmishes a little less noticeable.
This was on a mercedes S class on the rear of both of the front seats, obiviously were people had been getting in and out of the car.
It was nappa leather which is what is in the lex isn't it ? Although the only difference was it was a light grey, unsure wot colour yours is but it worth a blast even if its with some other brand leather cleaner you may have.
NaaN