Primrose the host 3.5e d

This is primrose, she is my character in a dnd game with my friends, her class is homebrewed "the host " is a character that bonds with a symbiote (similar to venom from marvel ),
And cuz she is a dnd character here are her stats plus she is 6th Lvl 
str 22
dex 18
con 20
int 14
wis 18
cha 12

Yeah she is overpowered

backstory time 
there once was a small village to the north, always covered in snow, in the village there was 9 year old primrose with her family, happily playing in the snow. When a group of raiders invaded the village 
they raped and pillaged the whole village leaving primrose terrified, beaten, familyless and homeless. Wondering the woods around the village for help, she found it in the form of a crash of a ship... 
Approaching the crash, a blackish slime pored out of the ship, engulfed a cold and scared primrose 
And speaked inside her mind "listen closely little one, I mean you no harm, my name is Cerberus and I am a creature of which that you don't understand, but I understand you seek revenge, if you accept me into your mind and body, we can make them pay for what they did. What do you say human... " with the power of the symbiote she sneaked into the raiders encampment and massacred every single one of them. Growing up was a difficult and odd experience for both primrose and Cerberus because of well... One is a alien and the other is a little girl. Now she is 24 years old and is anti-hero that destroys any corrupted government/churchs staying true to chaotic good, also she does not care what gander someone is, if someone looks hot, she will try to get in their pants.