Can i dye those areas pink again without having to bleach it all over again?

My natural hair color is black

My cousin is a cosmotologist and she bleached (part of it only) and then painted the areas withj pink color (the color was in a small envelope the was called "Crazy Color"

After 8-9 washed the color started to fade and i painted the areas that were pink black again

(A month later) I washed 8-9 and now the areas that i painted over are now light brown

I wonder if the bleach is still on my hair or did my cousin take it off with some chemicals?

Im 14 and i want to color (the previous areas) pink and purple.

When i go to the tenth grade im going to cut it all short and get a new style, maybe like Posh Spice. But i want to know if my hair is still bleached after the previous procedures

P.S. My hair is not like my avatar, is to shoulder length and in layers

Can i dye those areas pink again without having to bleach it all over again?

No, you hair isn't still bleached. You need a lighter colour to dye over, so you should bleach it again.