Just an update:
My girls are gone now and I'm a mess. I refused to let myself feel sad until afterwards since I didn't want them sensing any negativity. I held Dexi during the whole thing, and would have held Kahlua too if she'd wanted it. I managed to hold back sadness until they were gone but now I'm really feeling it. I came home and caught myself just before I said, "hey girlies" to their empty cage. That caused the floodgates to break wide open.
I am having them cremated together and right now they're wrapped up together in the freezer until I can get the service arranged. From the day they met to the day they died (and forever after) they have never left each other's side.
And I'm crying again...
Thanks for the kind words and support that was already posted. If you'd like to give more, I would really appreciate it.