Ty doubted the recent awakening of his powers and that demoness asking for forgiveness in ‘his’ church weren't linked.
Thinking carefully of what he was doing when the succubus entered, Ty started to wonder if he didn't accidentally whish her into existence. After all, wasn't he prying for something, ANYTHING, that could stop his foster parents for giving him so much crap? Wouldn't helping a demonic being redeem itself be the ultimate way to do so?
Now, Ty hoped the girl ALREADY was a demoness, that his powers only make her go good. Because he couldn't live with changing someone into a demon. (That, and he wouldn't know what to think about creating a nice demoness from scratch.)
But regardless of how Touma came to be who and what she was now, he couldn't abandon her, not NOW! Not when she needed him the most.
So Ty got up, slowly walked to her. Then, he took her coat from the floor and draped her in it. "You should be more careful with that coat, especially since you don't have anything under it."
Touma didn't know if it was his caring smile or his worried eyes, (worried FOR her, not ABOUT her) but she blushed so much, she became as red as how devils are usually pictured.
"Don't worry, girl," tried to reassure Ty "I got your back. If you ever want to speak of anything, feel like you're about to go back to your old habits, or simply need a shoulder to cry, you can come to me. At any time."
At this, the demoness took her savior into her arms, lending her head into his shoulder and, just like he so nicely proposed, let all her tears flow freely, for the first time in her long life. "Thanks."