What do I need to do to get marry with someone that got in to the country with a visa and now she Docent have that anymore

What country are you in? What country is she from? She's with you, but her visa expired?

I assume that she entered US as a visitor and now her visa expires. There are two separate issues here:

Marriage.. you can marry her as long as she has any form of ID such as passport, etc.
Visa.. both of you should look into details in regards to immigration law.
USCIS - Green Card Through Family