The DMF is over for this month, and thankfully Blizzard was able to resolve the issue with the bugged artifacts.
I petitioned a GM and they quickly gave me 10 tickets for both the artifacts. At first the tickets were actual items and not currency (therefore not usable to purchase anything), but they swiftly responded by adding them to my currency tab once I mentioned it. Glad to see that they are taking responsibility for this past month's flaws in the DMF event, even if they couldn't fix everything in one week and some will have to wait until next month.
So despite the scare and the bump in the road, I'm currently still on track for purchasing the remaining three DMF pets. As long as I keep hunting for the artifacts and doing the dailies each month, everything should go as planned. Hopefully.
Next up: Lunar Festival! I've already spoken with a guildmate about assisting me with transferring the horde version of the Lunar Festival pets (Festival Lantern) through the neutral AH, and if both pets remain at the price that the armory has them listed as, I might even make some time to gather even more Coins of Ancestry to buy a couple lanterns from either side. Just in case someone might want to trade. :) They'd also make great gifts later in the year too.