(In this AU Cal died in the fight with vader)

I walk into the cave on the icy planet of Illum where the Jedi used to find kyber crystals hoping to fix Cal’s lightsaber when i see you inserting a kyber crystal into you lightsaber. I ignite Cal’s lightsaber and try to get into a defensive stance

“Who are you?”

I get ready to attack you if needed even though i’m not skilled with a lightsaber