Tell her you were planning on studying and relaxing.

"I was just going to do some studying and relax a bit. It is a school night," you say.

"Very responsible of you," Belinda says gravely.

You and Belinda are interrupted by Ethan and Mrs. Anderson walking into the dining room. The two of them join you and Belinda and the discussion turns to homework, what happened at school, etc.

Your mother comes in wearing a sexy maid's uniform and serves you all dinner. Then she sits down at the table herself and the five of you begin eating dinner.

Dinner is excellent, though simpler than you've gotten used to at the Anderson residence. It's spaghetti just the way your mother makes it, which makes you realize that she probably did make it.

When you've finished, you excuse yourself and go back up to your room.