I understand why my mom got divorced and is on the verge of another one.

I will now categorize the reasons into personal and inter-personal.

The biggest reason, would be personal.
She is a huge irritant. Every question and action needs an affirmation.
Imagine a 30 minute car journey.
Minute 1 : she asks you if you want a sweet. If you say no, she,ll ask you why and you have to give her an answer.
Minute 5 : she comments on the driver in another car being too fast/slow/unstable. Then she will keep on reiterating her point about that driver and asking you whether you agree or disagree, in which you have to giver her a proper answer.
Minute 10 : She talks about the place you're visiting and perhaps asks you if the dress she's wearing will spark off a positive reaction from the relatives/friends. You must answer her.

This goes on about once every 5 minutes till you reach your destination.
Now. Imagine the scenario at minute 10. If you don't answer her and just keep quiet. She,ll come off saying. "I,m talking to you". Then lets say, you tell her that the dress is nice. She will ask you "why". Followed by something like. " The ribbon is pretty right?" in which you must answer or she will come up with something like " Why today you so moody " this further aggravates your irritation and you answer. " No la. the ribbon is pretty" in which, she will comment on your "unhappy tone of voice". After which, she will go back to "So do you think they will say my dress is nice? " and the cycle goes on.

In other words, my mother's personality is an allergic reaction.
It is itchy, blotchy, swells and doesn't go away.

I was at my stepfather's place. A relative of his came in when she was in the toilet. I shook his hand and wished that stranger happy CNY. My mom came out and wished him happy CNY. I was sitting there watching TV. She told me to go greet the relative but i already did so i just continued watching TV. She then told me not to give such an attitude so i told her i greeted him already. What she did then was bring the relative to me and said. "This is my son". I turned to the guy i already greeted and said. "Hi". The guy replied "Hi". My mom then said. "Why so rude! call uncle and wish him happy new year". The relative told my mom. " He already wished me happy CNY just now". My mom said "Oh. then, (directed at me) Shake his hand mah". I looked at her and told her. "I already did." In which she replied. "Where got? I didnt see." So i told her, "You were in the toilet just now." Only after that, does she laugh it off like its a huge joke.

Yes. Allergic Reaction.

I,m quite worried about my sister.
I,m sorry. She's my sister but i can't help but feel that she is gonna be pretty stupid.

Number 1, she is 7 months old.
However, she only mumbles "la" sometimes. According to an online site i found, babies her age should have a repertoire of "ba,la,da,ra,ma,na," as they are experimenting with their tongue. I,m rather certain that up till now, i,ve only heard bawling and the occasional La.

Number 2, She has sucky parents.
My dad doesnt teach her shit. So its up to my stepmom, a Thai who just learnt english up to maybe secondary school standard 4 years ago, to teach her.
Its not very promising when she says "selina, have you ate?" or when she reads to my sister without the use of diction. "Keng-a-loo" which is supposed to be kangaroo

I named my sister Serena.
Yes, after Serena Vanderwoodsen which embodies, beauty, style and finesse.
The name Serena is supposed to be elegant in nature.
But after my stepmom distorts it to Seliina. It starts to sound ah lianish.

Yes yes. I should do my part as the educated older brother, guiding her along. I must admit though. I am quite lazy but i,m pretty busy too.

I have a 2 year old nephew. He is such a dear.
A genius too! That 2 year old boy, can speak fluent chinese.
You ask him. "Ni siang che she mo" (forgive my horrible chinese) he says. " Wo siang che Pu tao (grapes)" you play his favourite dvd and he tells you that the tiger is gonna eat the bee.
"Kor kor, ni kan. Na ge lau hu hue che diao mi feng"

That guy is 2 years old. I swear he is a frickin prodigy.
Well...his parents did study medicine in university...