@Dna0
hm, maybe she made a mistake and forgot to enter the proper number of guests. And maybe she is trying to scam you, hard to tell...
Send her a message to please withdraw the request if she doesn't want to book for 1 person or you will accept it and then she will have to cancel the booking if more people wants to arrive and she will lose Airbnb fee and will have to wait up to 2 weeks for a refund.
If it doesn't work then I would decline to save my time and future problems with unregistered guests etc...
@Sandra126 is right but if 8 of them arrive you will have to forbid them access and will have to contact Airbnb to cancel their stay . If they enter and you discover it later then you will have to cancel their stay, kick them out....very unpleasant situation