RWBY x shape shifting Indominus Rex reader

Part 1 beginning To Beacon

Ruby pov

I was playing with Yang my older sister outside until I found an egg

Ruby: big sis look an egg

Yang: cool let's get mom

later

Tai: Which one of you found it

Ruby: I did me and Yang were playing outside then I found the egg just sitting there

Summer: well Ruby your taking care from now on

Ruby: yay 

Crack

Tai: well looks like we don't have to wait any longer

Me and everyone else were watching the egg hatch and when it was done it looked like a white dinosaur

Tai: what is it

Qrow: it's called the Indominus Rex it's a dangerous creature 

Ruby: Uncle qrow he's so cute he's not dangerous at all I think I'll call him Yn

Qrow: remember Ruby you gotta take care of it clean up after and

flash

Yn: roars

Ruby: I will take care of Yn and I will protect him

Yn walks to Ruby and licks her

Ruby: I love you too

later that week with Ruby and Summer

Ruby: mom why do we have to cook the raw meat

Summer: well Ruby we know that Yn eat's raw meat all the time so I decided that I will cook the meat this time

Ruby: okay

Yang: Ruby Yn turned into something else

Ruby: I'm coming Yang