There are many things in this world that I don’t know how to explain as to why the Lord allowed them to happen. For example, the twin girls from Panama who are joined at the chest and share the same heart. How do you reason?
The Lord didn’t create the world this way. This tragic event is the result of a fallen Creation, where God has been abandoned, the evil one is in control (1 John 5:19), and terrible things can happen to anyone at any time.
If these two babies die, they’ll go straight into the arms of the Lord as two whole and perfect little girls. I can guarantee you that neither one of them would want to come back even if they were promised the most blessed life Earth can offer. The rest of us should blame Satan, not God, and pray his already scheduled incarceration will begin soon.