Kassandra is getting ready for the Solstice

I came by Kassandra's place recently, and I found her very busy, putting up her Solstice decorations.

"I see you are getting ready for the Winter fun", I said.  

"Yes", she said.  "I am even putting up a mailbox for the kids to deposit their Santa's letters".  

"Oh, do you have more kids?" - that was something I did not know.  

"They are not mine, but I am "Grandma" to them.  They are lovely, and always so full of joy.  They really enjoy preparing for Santa's visit.  I will invite you over when I have some of their letters.  They are always something special."

"I'm sure they are".