What is your theory for them only cleaning up some of it but not all of it? How could that have happened? If there is a smear mark on the wall, it's potentially from any of the 4 of them, RG, MK, AK, or RS, why would they not clean it immediately? If there is a big blood print on the bathmat, why not clean it immediately? These things are obvious, not invisible. If they cleaned their foot prints out of the hallway, why are RG's still there? Seriously. You said she could have left the crap to implicate RG. So seriously, if they're implicating a stranger, why leave the crap?
If it's so dangerous to accuse RG, why not clean up his evidence, too? Why clean around his evidence? Please explain. For me, there is no evidence of a clean up of the crime scene, just a clean up of the criminal himself, so please help me to logically understand this clean up attempt. Please.