That's fantastic news, congrats to the DGF!
Make sure to check out the master AMEX CLI thread. TL;DR is keep money flowing through the card and the balance low and after 61 days, a CLI should be in order and it might be impressive, to boot.
Even if you dont "use" it, having the higher max credit line looks good on her credit file, especially after coming from being an AU only.
Sometimes 💩 happens, too.