Hi
As your wife has requested account recovery, there is nothing that Apple can do to speed the process up. She will hear from Apple in due course, but it is not possible to say when that will be.
In the meantime, should she wish to contact Apple Support, they can answer questions about the account recovery process, but Apple Support cannot expedite the process in any way.
Your wife may be able to speed the process up herself by following the advice here, under "Tips to regain access faster":
Regain access to your Apple ID with two-factor authentication account recovery - Apple Support
Otherwise, she will need to wait until the process completes.