HELP!!!!

I just started red pilling my ma, (she is a small town pastor).
I started with this.
Telling her noah's flood is based on this information.

Utnapishtim or Utanapishtim (Akkadian: 𒌓𒍣) is a character in ancient Mesopotamian mythology. He is tasked by the god Enki (Ea) to create a giant ship to be called Preserver of Life in preparation of a giant flood that would wipe out all life. The character appears in the Epic of Gilgamesh.[1] The Biblical story of Noah parallels that of Utnapishtim.

She asked me if I believe in this.
What can i say back?

the only thing that comes to mind is
-All I can tell you is that you have been lied to all your life.