Scrape Just Below Toddler's Lip, How Do I Treat?

My 21 month old got posessed and crawled RAPIDLY onto a bicycle and fell off. She got a kind of scrape-y thing just below her lower lip. It almost makes me think of what you would see on an arm or leg with rug-burn or something.

To complicate things, she's going through a phase now where she likes to raspberry all the time and all the reasoning in the world that I come up with won't get her to stop doing that. So it's pretty much covered in spit all the time.

This is only day two and it looks like it's trying to scab over, but there's a slight yellow tinge to it. This morning I put some hydrogen peroxide on it with a cotton ball, then after it dried I put a little bit of neosporin ointment. I did the same thing tonight before bed.

This doesn't seem yet like something we should go to the Dr. for and I would really like to avoid this unless it's absolutely necessary...which if it starts looking worse I will do that...but does anyone have any ideas of anything else I could/should do to keep this clean and try to disinfect it?

Thanks so much for your ideas!