That may mean "Mrs. Lopez is here", though that would normally be expressed as "La señora López está". As a question, it means "Is Mrs. López here?"
The words ' te presento a la senora diaz' are Italian. These words translate into English as 'I present to you the Senora Diaz'.
"Como esta" translates to "how are you" in English.
It can be translated to English as followed. This or this is.
It is deactivated.
its in english
"Esta buena chica" translates to "this good girl."
Ésta allí---This one (noun in fem. gender) over there
You (formal)/it/he/she is/are surrounded
Machine
He is dead
I am tired.
that means how are you