Conversation so far:
when was george mallory in europe?
1910.
what did he do in europe?
Mallory and a friend attempted to climb Mont Velan in the Alps.
were they successful in their attempt?
turned back shortly before the summit due to Mallory's altitude sickness.
did they try again?
CANNOTANSWER.
did he climb with anyone?
in a party again led by Irving.
did he climb anything else?
he had ascended Pillar Rock in the English Lake District.
did he go with anyone?
no assistance.
did he set any records with his climbs?
CANNOTANSWER.
Are there any other interesting aspects about this article?
One of Mallory's closest friends and climbing companions was a young woman named Cottie Sanders.

Question: what was special about her?
Self-contained rewrite: what was special about Cottie Sanders?