Hello pepethebull,
When you look at members of the family, does it show that hers is an adult account? If so, you might try making her another approver to see if it refreshes her connection to Family Sharing:
"How to choose another approver
The family organizer can give another parent or guardian in the group over the age of 18 permission to manage Ask to Buy requests. Only one adult needs to manage each purchase, and after the purchase is approved, it’s final.
On your iPhone, iPad, or iPod touch
In iOS 16 or later:
- Go to Settings.
- Tap Family, then tap your family member's name.
- Tap Parent/Guardian.
- Tap Set as Parent/Guardian.
In iOS 15 or earlier:
- Go to Settings, then tap your name.
- Tap Family Sharing, then tap your family member's name.
- Tap Role.
- Tap Parent/Guardian."
You can find these steps along with other information that may be helpful, here: Approve what kids buy with Ask to Buy - Apple Support
If you have followed the steps correctly and you still have the issue, let us know if you get any specific alerts or error messages when trying, as those may help us determine what might be causing the issue.
We also recommend restarting your devices and keeping them updated as those steps assure you have cleared out any minor software issues and are running the most current version.
Restart your iPhone - Apple Support
Update your iPhone or iPad - Apple Support
If you still have questions, reach out to Apple Support directly, as this may require closer guidance: Get Support
Cheers!