Guest ID

[Charlotte16]

My guest says that she is unable to use ID as she is below 18 and asked if it is ok to use her friend's ID who is also staying but is over 18

However, her friend isnt registered on airbnb and I'm not sure you can use someone else's ID as verfication...?
Will the airbnb insurance policy still be valid if they use someone else's ID.

Should I be wary about taking this booking?