The Activity Club and the Ice Dungeon Challenge

Isabel is in a candy cane forest. Large candy cane tree trunks, most 2 stories tall, have smaller candy canes hanging off them, similar to branches. The forest is thick, and she can see the the Ghost of Christmas Present, who stands 7 feet tall and wears a bright green outfit, about 100 feet in front of her. He's swinging a giant candy cane tree trunk in front of him menacingly, but he seems to be having a hard time finding Isabel because his view is blocked by candy cane branches and she is wearing red, which blends in with the forest. Isabel readies her umbrella. She can either attack now or hide and come up with a plan.

What should she do?