I just did a quick google search on how long it takes on average for a nose job to heal, and from what I read, it said it could take up to a full year for everything. If that's true, OP... I wouldn't suggest your friend sniffs anything for a long, long time. I mean, does she really want to do irreversible damage to something she probably paid ten grand for?
...For the time being, and until things are good to go, if you're going to consume drugs together, I would just stick to the drugs you can swallow or smoke. I'd stay away from anything that needs to be sniffed. Just to be safe, you know? Cause I'm sure that surgery was painful to begin with, and it's going to continue to be painful for a bit, do you really want to potentially add more pain to that? Not to mention, undergoing ANOTHER surgery if you do significant damage?
I don't know, man. I would just avoid it all together until everything, inside AND out was completely healed...