I totally get that, but it isn't impossible that as just an individual who owns a business, she might have just been a fan and given that nothing has been said on their channel, it just passed her by. Given that nothing has ever been said on their channel, and everything is hunky dory they may never have even thought to look at them any differently.
Edit just to say that we can't ever know for sure whether they knew or not, so it's a little unfair to assume any moral wrongdoings on any company other than the Inghams.