Hi Happy Spring ! Thank you for allowing me to read your writing. I hope my comments are helpful. However, you are always encouraged to follow your own instincts and always keep writing!

First Impressions:
The first couple of sentences do a nice job setting the scene.

Suggestions:
Natalie yelled back, on her way out the door.
Since you didn't what Grandma said, the word "back" doesn't sound quite right here. Maybe "over her shoulder".

There's a lot of passive voice in this, especially in the places where the relationship between Rose and Lilly is described. This was probably written for a contest with a limited word count, but consider going back and fleshing out that relationship a bit. It would let the reader really know what makes Lilly tick.

Spelling/Grammar:
She continued to knit; waiting for the afternoon mail.
The semi-colon isn't correct here. To use one, both sides need to be a complete sentence on its own. "Waiting for the afternoon mail" is not. Try something like "She continued to knit and wait for the afternoon mail."

The end is sad

Ashley

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