She forces Diana to let go of her pants

Knowing that she'll likely fare better if she only has to contend with a (partially) disarmed Tyra while the human is out of the picture, the demon instinctually lashes out. The lash hits Diana's hand, which she retracts with a pained hiss, causing her trousers to plummet to her knees which quickly throws her into a thoroughly awkward tumble. She ends up skidding onto the stone floor down on her knees, panties pointed up into the air. After a long moment she lets out a slow "ooouch."

Meanwhile Tyra sprints forward and attempts to shoulderbarrel into the succubus, who deftly pirouettes out of the way and sends Tyra into the nearby wall with a loud crash of metal. Tyra pushes herself off and spins back to face the succubus, flame radiating from her hand as her symbol lights up.