Tailscale Funnels. Your wife doesn't need Tailscale on her device as long as what she needs to access is part of your Tailnet and you set up Funnels.
https://tailscale.com/kb/1223/funnel/#:~:text=Tailscale%20Funnel%20is%20a%20feature,don't%20have%20Tailscale%20themselves.
Tailscale Funnels. Your wife doesn't need Tailscale on her device as long as what she needs to access is part of your Tailnet and you set up Funnels.
https://tailscale.com/kb/1223/funnel/#:~:text=Tailscale%20Funnel%20is%20a%20feature,don't%20have%20Tailscale%20themselves.