Coming here from my question on travel.stackexchange
My girlfriend is a Mexican passport holder.
She studied in Netherlands for her masters and she possesses a residence card/permit from The Netherlands (the expiry date on the card says 1st Dec. 2016).
She is living with me at the moment in Berlin and already has her tickets to fly back to Mexico on 30th Nov. 2016 (1 day before the "expiry date" on her Dutch residence card).
She received an email yesterday (2nd Nov. 2016) from her University in Netherlands that because she's not a student at the University anymore, her status has been informed to the IND (Immigration and Naturalization service of Netherlands) and that her residence card is invalid from 1st Sept. 2016 (we both graduated in Aug./Sep. 2016) doesn't matter what "expiry date" is mentioned on her residence card. So technically she's leaving illegally since past two months in Berlin with me!
My question is: Would there be an issue when she'll go through border/passport control in Berlin (on 30th Nov. 2016)?
I understand that Mexican nationals enjoy 90 days in 6 months tourist stay in Schengen but this period doesn't automatically start after your long-term residence permit or visa expires. So is it necessary that she leaves Schengen area (to lets say UK) and enter again as a tourist before her flight out of Berlin.