Hi Piper John,
Family Sharing is great for sharing purchases among family members. To get started, make sure share My Purchases is on, follow the steps below to check:
- Tap Settings > [your name] > Family Sharing. On iOS 10.2 or earlier, tap Settings > iCloud > Family.Â
- Under Shared Features, tap Purchase Sharing.
- Make sure Share My Purchases is turned on, and that your account information is correct.
Once turned on, follow the steps to view your wifes apps:
- Open the App Store, then go to the Purchased page. Tap  or your photo in the upper-right corner, then tap Purchased.
- Tap your family member's name to see their content.
- To download an item, tap  next to it.
I hoped this helped, let me know if you are unable to follow the steps or need further explanation.
Check out this link to learn more: Share App Store, iTunes Store, and Apple Books purchases with Family Sharing
Take care,
Michael Help