u/Firm_Celery_7730

My girlfriend and I were playing Hearthstone, and I got a quest to challenge a friend for rewards. We played together, and immediately after the game, she got a 7 day ban for cheating somehow ( there was no information about what triggered the ban ).

It was just a normal game to completion that she won, and I didn't receive a ban myself. Does anyone know what might have possibly happened to cause this so we don't repeat in the future?

Thanks in advance for any possible insight.