Note that we are not authorized to remove activation lock from any device. And, the presence of activation lock usually means that Apple support will not be able to help you. That is, under your circumstances, Apple support will not remove the activation lock unless you can provide proof of ownership that they will consider to be sufficient. In this case, you would need to have your grand daughter's purchase receipt for the device from an authorized Apple seller with the device's serial number on it.*
*Rarely, an iDevice, even a used one, is purchased activation locked from an authorized Apple seller.
If she has the receipt, then she can use the support options below in trying to solve her problem. Alternatively, if an Apple Store is open in your area, then she can go there to deal with her problem. In this case, you she make a
genius-bar appointment (https://www.apple.com/retail/geniusbar/) if desired.
Get a call from Apple support to help solve your problem using this
link https://getsupport.apple.com/?caller=kbase&PGF=PGF63005&category_id=SC0245&symptom_id=23362
Apple ID Support https://support.apple.com/apple-id
Apple ID account security for country-specific and region-specific help https://support.apple.com/en-us/HT204169
Get Support: We’re here to help https://getsupport.apple.com/. Go through the options to find the best support option.