My mother-in-law moved in when I was thirty-two weeks pregnant because my husband said I needed help.

Eric turned to me, his face a mixture of deep disappointment and physical exhaustion.

"Natalie," he said, his voice flat. "Is this true? My mother is exhausted. She's sixty-four years old. You couldn't even help her pick up the living room?"

I stood on the bottom stair, perfectly calm, looking at Linda who was dabbing non-existent tears from her eyes with a paper towel.

"Eric," I said gently. "I did exactly what you and your mother agreed I should do: I stayed on bed rest. Isn't that what you wanted?"

"I wanted you to rest, yes! But not let my mother slave away until she's in tears!" Eric snapped, pacing the kitchen floor. "Mom has been carrying this household on her back for six weeks so our baby stays safe! The least you could do is show some gratitude!"

Linda looked at me over her paper towel, a tiny, sinister gleam of victory in her eyes.

"It's okay, Eric," Linda sniffled heroically. "I'm just a grandmother trying to do her best. I'm used to being unappreciated."

"No, Mom, it's not okay," Eric said firmly. "You shouldn't have to work like a servant in my house."

I didn't argue. I didn't get angry. I simply smiled a gentle, sweet smile that sent a tiny shiver of confusion down Linda’s spine.

"You're right, Eric," I said quietly. "Your mother deserves all the appreciation in the world. And that's exactly why next Sunday's party is going to be so special. We are going to celebrate everything she has done for us."

That night, while Eric was downstairs helping his "exhausted" mother clean up the mess she had made hiding dishes in the oven, I sat at my laptop and drafted the digital invitations for Linda's 65th Birthday Celebration.

I didn't just invite her local friends.

I invited her sister, Aunt Karen, who lived in Chicago and was known as the fiercest, most no-nonsense matriarch in the family. I invited her former bridge partners. I invited Eric's boss, the CEO of the construction firm, and his wife.

And most importantly, I set up a large, eighty-inch 4K smart television in the center of our open-concept living room, connected directly to our home network.

On Monday morning, I met with my brother Leo.

"I need you to edit the footage," I told him, sliding a USB drive across his kitchen table. "I want a side-by-side time-lapse. Left screen: her on the couch from 9:00 AM to 4:55 PM. Right screen: her dramatic 5:00 PM performance when Eric's truck pulls into the driveway."

Leo looked at the raw video clips, his eyes widening in absolute shock as he watched Linda sprint around the house at 4:58 PM like an Olympic sprinter.

"Man," Leo laughed, shaking his head. "This woman deserves an Academy Award for Best Performance in a Fraudulent Drama."

"She's not getting an Oscar, Leo," I said, gazing out the window at the sunny street. "She's getting an eviction notice."

Throughout the rest of the week, Linda retreated into her triumphant persona. Believing she had completely broken my spirit and turned Eric against me, she spent her days on the phone bragging to her friends about the lavish birthday party her son and "obedient" daughter-in-law were throwing for her.

"Oh, yes, Susan!" I heard her cackle from the patio on Wednesday afternoon. "Eric insists on throwing it! He told me he doesn't know how they'd survive without me. Natalie finally learned her place. I have them both right where I want them."