Starry - congrats on writing some stuff & - the general cant for the answer to your question is - to best get that answer, ask a lawyer. I would doubt it in your situation - mainly - as i understand it and IANAL* - the problem would be if your sister publishes a story using your characters then takes legal action against you if you publish a story using the same characters.
(* I Am Not A Lawyer)

Jason - congrats on the 418

Congrats on those three chapters, Gough!

WTG, Cindy!

That's some pretty excellent hanging in, Daniel with 1069 words

Congrats on that breakthrough Taylor

way to keep at it, Kit

Conrats on those 230, Ptero

Dang April! 1900 words! Way to come back!

(I'm on a way to roll today)

Day 11

WIP - 1/2 page
R/SC - organizing & crafting (including some mending). Fortunately I have enough chocolate here, and food, so I don't have to go out in the rain. Feels like autumn today
$$ - indy research