I have my girlfriend's daughter as an AU on my Freedom card, and it found its way onto her credit report in about 2 months.
Generally they can find with you with your last name and address. I did the same with my sister and husband. They were able to find both because we had the same address even though our last names were different.
They most likely used the name and address. They have access to a lot more info than most people realize.
Not all issuers report AUs to the CRAs. Check and see if Chase and Wells Fargo do.
Make that 3. I can't speak for WF, but my CFU showed up on hubby's report the same day it showed up on mine. And they didn't ask for anything but his name.
Are you in the same household? I have read that they won't show up unless it is the same address and/or the same last name.
As long as it is same address to same address I don't think that will matter. As long as they don't require same last name too. I can't remember exactly what I have read about that.