نص أصلي - انجليزي - I'm not her, I'm not she, I aint perfect I'm just ME

As I said above, I edited "im" with "I'm", but it remains a little mistake in this English text : "I aint", I don't think it is correct, but I maybe wrong, as I'm not an English expert and as my English isn't perfect...

Francky - I aint should be I ain't and it's used only in very informal language. What is strange is I'm not she.