Imaginary Sibling

For a long time Ember has been talking about 'my green house'.  It's a convenient little device she uses for things such as:

Em: I had a chocolate egg!
Me: Yum, lucky you.  Did you save me any?
Em: (pause) Yep, I got one for you at my green house.

There are all sorts of things at Ember's green house including babies, dogs, cats, lollies (sweets), cars and aeroplanes.  But the most recent addition to the green house is Ember's big sister, Alicia.  I should point out at this point that Ember is an only child, and I don't know anyone called Alicia, nor can I think of any stories we read or shows she watches that have an 'Alicia' in them.  I can't remember the first context in which Alicia cropped up, but she has occurred in a few conversations now, entirely self-prompted by Ember.
Me: Who's Alicia?
Em: My sister.
Me: I didn't think you had a sister.
Em: Yep, I does, she lives at my green house.
Me: Where did you hear the name Alicia from?
Em: From my sister.
Me: Yes, but where else? Do you know someone else called Alicia? Is there someone at Preschool called Alicia?
Em: Nope.
Me: Where did you get Alicia from then?
Em: From my work. My sister, Alicia.
Me: How old is your sister?
Em: Um. Five.
Me: Does she go to school?
Em: Yep, she goes to Raglan Claba School*
Me: Well where does she live?
Em: In my green house.  She's at my green house now.  We got a cat and a dog, we got two dogs, the girl dog is nice and the boy dog is naughty. The girl dog is called Mella and the boy dog is called Robot.
Me: What about the cat?
Em: The cat is nice. Her name is Flower.

*We live in Raglan, and the Raglan Club has a car the same as ours.  I suspect this is the origin of Alicia's school!

Alicia has come up a few times now, and each time I get the same response to age, school, etc.  I suppose if you can have an invisible friend, why not an invisible sibling?!


Here are a couple of other recent Emberisms worth a mention:

Ember making her two toy cows 'talking' to each other:
Cow 1: I got to go poos
Cow 2: No you doesn't, cows don't do poos, they do milk!

In the bath (playing with a plastic seahorse after having her hair treated for lice (again)):
Em: When I was a baby seahorse, I eated some nitties and they made me get all yucky and I was a pink seahorse.  But I was a green seahorse and the nitties made me yucky and turn pink.  But then the fairy come and she turn me back into a green seahorse again!