Has anyone been questioned at Canadian border when they have AP?

[bernie_elizabeth 2]

My spouse and I are traveling with my band (which she now plays in) to play a concert in Canada this week. She has her combo AP/EAD card but this is going to be the first time we're leaving the country since getting married. In the event that they want to question her when we come back into the states, I'm wondering what my rights are as a US Citizen spouse? Do I have the right to be present if she's questioned? Has anyone had this situation come up?

I have no reason to think she'd have an issue getting back into the country, but because we're leaving the country and re-entering as what would be considered a work-related trip, I'm a bit worried a regular border guard might not be familiar with work authorization while our AOS is pending, and she's not a permanent resident yet.

Has anyone been asked for paperwork besides passport and AP/EAD card? Should I print our marriage certificate?

Any advice or anecdotes would be much appreciated!

[Transborderwife 4,666]

Expect a possible delay, I don't believe that you have the right to be there when questioned. Make sure she has a copy of the marriage license