@Dawn104
Hi - you should never accept a reservation if you are uncomfortable with the person. As you don't have IB turned on you had plenty of oppotunity to ask the guest if they would share ID with you as part of the booking process. She has offered to do so when she arrives, which is much better anyway, given that any photocopied or amended document sent by email or as a photo may be a fake.
I am sure it is all fine, but you do need to think ahead as to how you want to handle future reservations and not put guests in a difficult position once they have booked.
Good luck