Canadian Border Control accepted a US I-94 when we forgot to surrender it in the US

[SuperSixZero]

My foreign born, Israeli girlfriend and I travelled to Boston to visit my family in the winter.

She has a spotless visa entry-exit record and this was the second time she was travelling to the US with me.

Our return flight to Israel was: Boston to Canada, and from Canada to Israel.

The airline never asked, nor did we remember to give her I-94 form up in Boston at any time. We did not realize this until we crossed Canadian border control.

Upon realizing this we surrendered her I-94 form to the Canadian border control.

-It was an I-94 (white regular) not a green one, nor the visa waiver program.
-We flew AirCanada, a commercial airline.
-We still have all ticket stubs/bordering passes for the both of us.

1) Will turning the US I-94 form into Canadian border control make it problematic for her next US visit this summer?
2) Will we need to provide more proof than just bording passes/tickets, that she left?

Is the website titled: "I forgot to turn in my I-94 when I left the U.S., what should I do?" a good start?

[cafeconleche]

Good start. Chances are CBSA turned in your I94, but if you want to be REALLY sure, write CBP and send a copy of your boarding pass and airline itinerary, and maybe your passport stamps for the day (Canada, Ben Gurion).

https://help.cbp.gov/app/answers/det...l-have-my-i-94

[Triple Citizen]

A1: You did the right thing. The Canadians will turn over all I-94s they collect to USCIS/CBP/ICE.

1) Will turning the US I-94 form into Canadian border control make it problematic for her next US visit this summer?