After asking for the check, we reviewed it and found that the Korean lady had added a 15% tip charge on the bill, even though there was only two of us. She told us in broken English that it was automatically charged. At first we were going to tip her pretty well since she tried to cook the food on the grill for us, but to be honest she didn't do a very good job at it. She angrily told us that she'll fix it and she promptly came back. She then threw the check down and old us that we had to tip her the minimum of 15%, which was about 11 dollars. Obviously at that point we just paid the amount that was due and did not leave her a tip at all.
I can't believe that she had the audacity to force us to tip her. We are never going back to a sketchy place like this again. If you do go, watch out for them adding a gratuity fee.