There was never a choice

Scarlet was really curious and she watched closely to see how Frost would deal with the brutal monkeys that laughed every time one of their fruits hit a target and elicited a reaction from them. 

What she noticed that the monkeys left Frost alone, not even targeting him from the moment he started his climb. Everything was smooth sailing and he gaining momentum, surpassing even grim reapers that had gone ahead of them many minutes ago. 

It almost seemed as if the monkeys were afraid of Frost.

"Wow, what is happening?" she asked Severus. 

"Special skills, is what's happening. You have your gut and your luck and he has that cold energy which all creatures in the underworld hate. Even the monkeys cannot stand that cold air, it's why he is called frost." Severus turned to her and he answered. 

He was much more relaxed now than when she had just come. It was obvious that he was very happy with the progress they were making.