Final answer:
If you did not hear or are unsure of what Señora Beltran said, you can politely ask her to repeat herself or clarify.
Step-by-step explanation:
If you did not hear or are unsure of what Señora Beltran said, you can politely ask her to repeat herself or clarify by saying "Disculpe, no escuché bien. ¿Puede repetirlo, por favor?" (Excuse me, I didn't hear well. Can you repeat that, please?). Alternatively, you can say "Perdón, no entendí. ¿Puede explicarlo de nuevo?" (I'm sorry, I didn't understand. Can you explain it again?). Using polite phrases like these will help you communicate effectively and show respect for Señora Beltran.