My friend is working on her story and needs a bit of help -- there is one part that she is stuck at ..details inside?

She’s working on a novel. The part that she is stuck at is a simple scene, although, she said that she’s terrible at coming up with ideas for this sort of thing—the daughter is sitting at her kitchen table, coffee in hand, with her glass sliding door open (leaving only the screen door) and outside the rain in falling. She’s watching the rain, sipping on her coffee, when in walks her Mom. Her Mom grabs a cup of coffee and sits down at the table—- what to they talk about?