Her "spine" popped out of place!

The bit where it connects to her hip has come loose and it's proving to be a difficult place to get the peg back in there. She's a softbust 27cm girl. Anyone have any tricks to get the peg back into the hole?
Where no dollieh is left behind.
https://w.dolliehsanctuary.com/sanctuary/
https://w.dolliehsanctuary.com/sanctuary/viewtopic.php?f=6&t=1591