Easiest riddle in history.

There are 8 sisters who decided to do things since they were very bored. Here is what the sisters were doing:

• The first one was doing laundry.
• The second one was sleeping.
• The third one was playing chess.
• The fourth one was cooking food.
• The fifth one was texting.
• The sixth one was doing homework.
• The seventh one was reading.

Question: What was the 8th sister doing?

So easy...

not really

Playing chess with the 3rd sister.

I didn't see that one