I'm so sorry about your sister, even don't know what to say:(
Being a female Sheldon is may be strange for other people, but it really is an option. And yes that episode... And all the other episodes! I really watch ad see myself being acting like this.
Once I've been meeting with my friends who recently started watching, and we had this conversation:
-You know, you remind us two characters from the "Big Bang":)
-OK, who's the second?
-Leonard's mother!
That was the moment when I understood how I usually look lol:)
P.S followed you back:)