That's a lousy situation to be in. Glad your wife came through with the paperwork for you. Lucky you were in an area with cell phone coverage.
I keep .pdf files of my forms on my phone, and as a retrievable email attachment. Hard copies go in all my range bags. For suppressors, that's about it. For SBRs I like to keep a copy rolled up in the hollow of the grip, that way I'm never without it. In AZ the law enforcement is more likely to be reasonably relaxed around suppressors, since we just had a well-publicized law making it legal to hunt with suppressors.