Rant, what do you think??

So, recently I've found posts on Facebook from my ex and a few of his friends talking about me (I'm the bitch obviously, I go on his page to see if he realises he has a son). Anyway they were talking about my older sister who is autistic and schizophrenic. They were saying all sorts of mean shit and my ex decided to tell them I was bullying her my entire life because of how I figured it was like.

4 year old me, gets told sister hears voices in her head so she's on tablets to try and make them go away.

So 4 year old me pictures good and bad fairies in her head who tell her to do good/bad things and the tablets shes on locks only the bad fairies in cages and puts a blanket over them so she can't hear them. So then she's nice and happy all the time after being depressed and angry for months beforehand.

Pretty good for a 4 year old right? So now I'm a bully for being a kid with an imagination?

I'm sorry but just today my 5 year old asked why auntie R lives with granny and I don't, I explained the above story and added that she needs extra help because the fairies don't grow up like peter pan so she's still a kid in her mind. Whereas I'm not so I don't need extra help, instead I give the help and take care of him and his brother.

Am I really a bully?