How much did Karen really drink?

They showed video and receipts of her receiving shots and drinks, but she poured a lot of them in her glass and even left with the glass so it likely wasn’t empty. To me it seems like she wasn’t taking the shots and was nursing her drink. Maybe she poured them in her glass to not take them. At her size, she’d be a lot more inebriated after 9 drinks. She definitely was drinking and driving, don’t get me wrong. But that appears to be the norm with this crew.