Received the invitation after the rsvp due date
What am I to do I received an invitation to a bat mitzvah for November 18, 2017. On the RSVP the date to RSVP is October 20, 2017. My invitation arrived to me with normal delivery on October 25, 2017. Clearly I’m On the B list, how do I RSVP or do I even RSVP what do you think?