Here's why it's incorrect and how to say it correctly:
* "Votre" means "your" and is used for possessions. It doesn't work with "la femme" (the woman).
* "La femme" is the feminine definite article "the" + "woman."
* "Pour moi" means "for me."
The correct way to say "You are the woman for me" in French is:
"Tu es la femme pour moi."
You can also use the more formal "Vous" instead of "Tu," depending on the context:
"Vous êtes la femme pour moi."