Odd Sibling Behaviour

I picked up a grade 4 girl for her lesson today.  She has a sister - let's call her Alice - in grade 6, and they don't get on brilliantly.

Girl [surprised]: Alice is actually really nice.
Me [skeptical]: Alice - as in, your sister Alice?
Girl: Yeah, she got out of Japanese to come and see how I was.
Me: Did she?  Your sister came to see you?
Girl: Yeah.  She was seeing if I was okay.  F [in grade 3] hit me at morning tea today, and Alice was checking I was all right.
Me: Wow.  Are you okay?
Girl: Well, I still have a scratch on my face [still visible] and he hit my arm which is still sore-
Me: Which arm?
Girl: My right arm...
Me: Hm... This is your sister we're talking about, yes?
Girl: I know.  Weird, right?  Normally siblings... Well, they fight.  A lot.  They're not nice to each other. 

Magic Elves

8-yr-old boy's last lesson for the year.  I teach his older sister, too, but she hasn't been able to come to the last few lessons.

Me: So, this is your last lesson for the year.  Would you like a Magic Elf? [like a Freddo frog, but with tingly bits in it - and shaped like an elf, obviously]
Boy [eyes lighting up]: Ooh, yes please!
Me: If I gave you another one, would it make its way to H?
Boy [head to one side, thinking about this seriously]: Ummm... Only if you give me 4.
Me: 4?!
Boy: Yeah... You know how C and I are as well, if I come home with 2 then they'll all want one!

He had a point.  He was the only to get a Magic Elf.

Stressed

Grade 3 girl.  I'd just picked her up from her class.

Me: How are you?
Girl: Stressed.  Do I look stressed?  I'm really stressed.
Me: Oh no!  Why are you stressed?
Girl: My little brother said he would shoot me.  With his Nerf gun.
Me: ...Why...?
Girl: Well, I took in some Dr Seuss books to school, and he said if I don't bring them all back, he'd shoot me.  But, mum said it was okay for me to take them in, so obviously she didn't tell him that.  So, I took 4 in [she names 3 - sorry I forget which ones they are] but I can only find those 3... The problem is, I have no idea which one the 4th book is.  So I'm guessing I'm going to be shot.  With a Nerf gun.  By a 4-yr-old.  Probably in the eye.
Me: In the eye???
Girl: Well on the weekend, J came over, and he shot her in the eye. 
Me: Maybe your brother shouldn't be aiming guns at people's faces?
Girl: Oh it was an accident.  He'd already aimed when she stood in front of him and was, like, what? and he just... fired... So now I know ... that he knows... how much that can hurt... so I have to find that last book so I can take it back home so I don't get shot by my annoying little brother, in the eye, with a Nerf gun.  Can you see why I'm stressed???

Siblings - Almost

A 5-yr-old, in one of her first lessons, had her fingers all squished up on her bow.  In an effort to give them a bit of breathing room, I asked:

Me: Do you have any brothers or sisters?
Girl [with a look of 'surely you know this']: Well... yes... but they're still in mummy's tummy.

I should point out that her mother was about 8 months pregnant with twin boys at the time.