Newbie to flows: email won't send to person besides me

I'm trying to create a super simple approval workflow (i.e., when I say a Word doc in a SharePoint doc library is ready, notify people and have them approve or reject).

I've discovered what I think are 2 ways to do this:

Workflow: If I right click the file, choose Automate then Request Sign-off – this adds the nice Sign-off Column to the Doc library, sends email, and notifies via Teams (as I understand it, this is part of the SP Modern experience)
Power Automate: If I right click the file, choose Automate then Request Approval (everyone must approve) for a Specific File – this does NOT use the Sign-off Column (which is a con for me), sends email, and notifies via Teams

The problem I'm having is that if I put my name/email into the Approver box, I get the notifications as expected (on email and Teams). But if I put my boss' name/email, she doesn't get anything. This happens for BOTH of the above options.

She has permissions for the site, same as me.

So, what am I missing?

Thanks,

Kali

Quick Links

Leaderboard > Power Automate - Using Flows