Yennefer and Nadine will offer to go down and check the vaults for him - they're letting Summoned inside to investigate the crime scene to see how we can help, and both Yennefer and Nadine know of others who have been allowed down to check for themselves.

If he is comfortable with it, they would be happy to go down and get that important item for him and bring it back. But of course, only if he's willing.

Also, Nadine is going to offer him some calming tonics - since he's mentioned worrying about the stress this will cause.