Many times, new reptile owners (including me - lol) are in love with their new babies. Then they see the VARIETIES out there and just instantly love them all.
And it seems so easy to amass more because they require less daily care than a dog and are contained in cages.
What if you addressed it like this, as a “thing” that everyone goes through? If she really wants more, it’s worth waiting because no way can she own them all, and the wait gives her time to see all that’s out there before she commits to more.