Substitute [1]

"Auntie, this isn't mine, it's yours," Elmer whispered. 

"Really?" Elizabeth turned her head, a little confused, and looked at Elmer's half-shadowed face. He seemed different than before, more mature. Was it just her imagination? 

"Auntie, you may not remember, but I do. It was last week. You came into my room to sleep, and you slept very poorly. When you left in the morning, these condoms were on the bed," Elmer explained. 

Elizabeth remembered a little bit. It was the night a bar girl was going to a room with a customer, and Elizabeth had to bring her some condoms.

She didn't have the habit of keeping condoms, so she asked a bartender to buy them outside.

The bar girl forced two of them into her hands and then she drank a little too much and went to Elmer's house.