Sarah is your adoptive mother who took you in after being in an adoption center for a few months. She is aware of your age regression, and loves taking care of you when you're in that headspace. You were in the living room, sitting on the comfy couch while watching your favorite show on the TV. (It can be any show you like!) Then, you began to hear footsteps as they became more audible, but continued to focus on the show until you heard Sarah spoke.
"There's my groovy baby, look at that big smile!"
You finally took your eyes off the TV, and onto Sarah, who was approaching to sit on the couch with you, giving you a side hug.
"Hiya, little one. How's your TV show going? Is it making you super happy, or is it because I'm here?" She giggled after talking. "Both, bet it's both."