suck it up, and just be an actual parent for once

my sister is the spawn of satan, people may think i aM exaggerating but no she is the most evil b. that ever lived
this may sound very harsh and that i in fact may the a b. for saying this but it's true
i have proof
1) if she knows i want something she takes it just so i can't have it
ex: there was some really wicked old school Ray Bands in our basement and k. new i wanted them so she ran to my dad and was crying and saying she was sad and the only way for her to be happy was for her to have the sunglasses. i of course didn't mind as long as she actually wore them, so months go by and she just left them wedged in between stuff ,never actually wearing them so yestrday it's so freaki'n sunny out and i don't actually own a pair of sunglasses ,and she was gone so i asked my dad if i could wear them considering k. since recieving them a couple months ago hasn't worn them so he said yes as long a k. doesn't see you wearing them (because we all know she will pull a huge fit if she did.) so i wear them to school and now i have grown completley attached to them so when i go home i am deciding to ask her if i can have them.
well as soon as i open the door my dad runs to me hands out saying 'quick give me the glasses!' and i say why and he says k. is home so i quickly give them to him but still i say 'can i have them so i can ask her if she will give them to me?' he gives me a wary look and agrees so i go down stairs where she is playing on her brand new mac laptop ( my dad gave me his hand-me-down 5yrs old one that sucks because they couldn't afford to get me one) so i go hey k. i was wondering, since you don't wear them can i have theses glasses she looks at me looks at the glasses and yells"NO! GIVE ME BACK MY GLASSES I HAVE BEEN LOOKING ALL OVER FOR THEM' this of course is a lie but what am i to do so i give them to her.
just so you know my sister has 5 pairs of brand new sunglasses all of them ray bands and yet she won't give me the six pair and the only reason i like them is because they were my nana's and she died and when she died i actually cried my sister no joke was happy because she hated my nana and didn't shed one tear-honestly i am not making any of this up.
so today i am still completley hung up on these very important to me glasses so i go to her with what i thought was a good idea i say k. i will pay you whatever you want for those glasses she looks up from her laptop and says how much you got i tell her to name her price 10$? $20 i had about eighty but if i told her that she would make me pay eighty she looks at me again and can probably see how desperate i am to have those glasses that i am willing to pay anything so she says 'no, get outa my room'
how evil and she said she as wearing them yesterday but i fond them on the bathroom floor under a bunch of her clothes!!
and my dad is afraid to upset her so she gets what she wants when ever and i am left with 'your the oldest ,your sister, she is suppose to be like this to you.' she makes such a fuss of everything that i keep all my emotions bottled up and my opinions unknown so i don't send my parents over the edge because they are to busy trying to handle her and by the way she isn't even a little kid she is 14

i know it's silly yo be upset over a pair of sunglasses but really
if you think i am toatlly overreacting please say something it's best to get an outsiders opinion because my parents won't say anything they are to affraid of up setting k.