Copilot in MS365 not available with one account on one Mac

I am stumped as to why my wife cannot see Copilot in the menu bar of any MS 365 app on her laptop. She is part of the family plan, and I have confirmed that her subscription credentials allow her to use Copilot. 

The MS apps are at the latest version, along with macOS.

Scenario 1:

• When my wife uses her MS credentials to log in to any MS 365 app on her laptop, Copilot does not appear in the menu bar.
• When I log her out of MS 365 and log in with my credentials on her laptop, the Copilot appears on the menu bar.
• She can run the standalone Copilot app on her laptop using her credentials.

Scenario 2:

• When my wife uses her MS credentials to log in to any MS 365 app on my laptop, Copilot appears in the menu bar. 

I can't tell what is preventing Copilot from appearing in MS 365 on my wife's laptop when she is using her credentials.