It was your dance studio, Theo. It was my toy room. It was a reading room for mom. It was the game room for Steve. It was a family room for Shirley. Three rooms. No girls allowed. But it was always the Red Room. Put on different faces so that... We'd be still and quiet while it digested. I'm like a small creature swallowed whole by a monster. And the monster feels my tiny little movements inside.

Summary: This passage seems to be a description about a place called the Red Room. It describes what the room was used for by different people in the family, and then takes on a rather eerie tone by comparing being in the room to being swallowed by a monster and the feeling of being inside the'monster'. It creates an atmosphere of unease and mystery.