Is is correct to say ~亡くなりなりました?


Did I hear it wrong? And should it be 彼女は亡くなり **に** なりました?

I am watching Japanese movies to improve my listening. In a movie a character
said:

> 彼女は亡くなりなりました

Mentioned that I know the rule:

> Na-adjective/noun: **~ に なります**  
>  I-adjective/nai: **~く なります**

My listening is not good yet.




The rules you mention apply to adjectives. 亡くなる is a verb and 亡くなり~ is its ~ます
stem.

