If she had meant them harm, guns wouldn't have done much to stop her. Storm was an Omega-level mutant, one whose power reached the undefinable upper limits possible. She'd be a dangerous foe bare-handed; armed with Stormcaster, it would be wise to simply capitulate. It was perhaps lucky for the world that she was a pacifist when given the choice and avoided taking life at almost all costs. Fighting a foul creature such as Uovu was one thing; two seeming-humans who were making no move to attack was quite another, and though she didn't let go of her hammer so as to maintain the Asgadian armor that protected her, she did relax her guard a little.
"Uovu." She closed her eyes briefly at the name, itself a dark omen of the being's true nature, meaning 'evil' in Swahili. "A dark god who sought to usurp me and desecrate the bodies of my people to strengthen himself. My friends removed his supporters, but he still has his own power." Whatever had brought her here - the man said it wasn't them, and for now she was willing to give them the benefit of the doubt - didn't seem to be lingering to allow a return trip. The air felt strange but within the bounds of normal and there were no obvious disturbances like most of the portals she'd seen in the past. If she couldn't return, it would be on Rachel to try to hold him off while Kurt went for reinforcements, most likely. It was the obvious tactical choice, and she could only pray it succeeded.