Scab or infection on boas nose?

[Pterolykus]

My red tail boa recently (a few months ago) injured herself somehow. I think she scraped off a scale or two on her nose. I've seen it happen to other boas so I'm not sure if it's a common thing for boas to do?
Anyway, it didn't look infected to me, and I posted about it when I first noticed it and nobody seemed too worried about it so I cleaned it up with pure water and cleaned her enclosure. I know for sure it's not a burn because her lamp isn't close enough to burn her. I use repti-bark substrate and she has a stone water bowl.
So now the injury seems to have risen and created a scab look to it but I have no experience with external injuries in snakes so I have no idea if it's just a healed scab or an infection.
I have a link to a few pictures I took but the thread refuses to let me link it since I am a new member.

Whether it's a scab or infection, is there anything I can do? And if it's infected, are there any ways to clean it up myself? Of course, if I can't do it myself, I will make an appointment with my vet.
Thanks in advance.