Expert martial artist Lois who has dealt only with humans and her fighting style is totally useless against a giant monster with an axe.
Real life martial arts don't prepare you to fight a mugger with a knife nor animals such as dogs and deers, let alone a monstrosity like this.
Unless Lois has showcased superhuman martial arts, DBZ-style, they would be completely useless here.
Also, good luck sidestepping an axe bigger than your own body that stands several meters away from you. Lois, according to her profile, would struggle against a person with a sword or a spear, the Demon is totally overboard material.
Also, again, those "overhead" slices are a set pattern from the game, which can hit the Chosen Undead anyway because of the wonky hitboxes, so it's not accurate. The demon could literally do anything, kick, wave its horns, stomp, Lois is severely outranged and lacking in LS and sufficient AP advantage.