That's impossible no one experienced this before with Ledger. Unless its already have a wallet own by the previous owner.
I'm wondering if she bought the ledger as 2nd hand-used and maybe she didn't generate a new seed phrase and the wallet already have generated wallet own by the previous owner. That's possible than just created a new wallet from the ledger and luckily found doge coin.
This device was purchased from an official reseller and had not been used by anyone else before. It came in a brand new, unopened box and was completely sealed.