What does Reina mean?
The Spanish word 'reina' means 'queen', descending from Latin 'regina'. Also spelled Reyna. (A separate Hebrew/Yiddish name Reina meaning 'pure' exists; the Spanish 'queen' sense is the relevant one here.)
What does Esperanza mean?
The Spanish word for 'hope', from the Latin sperantia (from sperare 'to hope'). One of the three theological virtues and a Marian title, Nuestra Señora de la Esperanza (Our Lady of Hope).