Would you accept a really high tip from a very drunk person?

We jut had a woman come in and drink two glasses of wine and get plastered to the point where we had to refuse her service and she was draping herself over the bar (at like one thirty in the afternoon). She paid for her wine ($15) and was struggling to figure out the math to leave us a tip. She ended up leaving us a $30 tip. My manager is holding the receipt before entering it into the register and charging it to her card and stuff. She's going to consult with my boss.

What would you do in this scenario? I know that when I'm out drinking I've occasionally left a 100% tip on a bill or something that's a little out of my means, so like I've definitely done it before, too. I always mean the tips I give.