She never seemed to be one of those 'settle down' type of people, to melt and to cook babies type.
She didn't go to the Police after Doakes told her the truth about Dexter being the Bay Harbor Butcher! She wanted to save Dexter..
She could have demanded any money from the Miami Police in exchange of truth about Dexter! She was not interested in money either..
Angel could give her all the s*x she ever wanted, She wasn't interested in that either..
Did she want to marry Dexter to clear her immigrant status and become a citizen?
What was her true game plan?