Legal - Apple Media Services - Apple
"All Family members must share the same Home Country."
Share purchases with others in your Family Sharing group on Mac - Apple Support
"To share purchases, family members must be in the same iTunes Store country or region."
She would have to have her ID set to the same country as yours, but even then it might not work: Apple Media Services Terms and Conditions - Legal - Apple Media Services - Apple
- "Our Services are available for your use in your country of residence (“Home Country”).
And: "Certain Services and Content available to you in your Home Country may not be available to you when traveling outside of your Home Country."