Alpha Xander: His Contracted Luna

"You killed my mate; Now you have to take the place of her," Xander announced the bewildered Catherine who had no idea what was happening with her.
"What do you mean by I have to take your mate's place?" she asked shocked.
"Be my contracted Luna," Xander said dismissively giving Catherine the next round of shock.
After being dumped by her long-time boyfriend, Catherine was sad and got drunk. Drunkenly she knocked down two wolves and she discovers herself in Xander's bed the next second.
Will she accept