Maintenance Re-stringing a Unoa Second/Unoa 2

Hrm, can you show us some pictures of her and the body? I haven't owned a Unoa 2, but I've had a lot of other dolls and so have other people, so we could probably help you figure it out.
One other option is to try asking in the Discussion thread for her sculpt and size, where other people with the same doll might know more.

 

I have one with her instructions, so I took a picture of them for you. They are SUPER weird honestly. You're supposed to insert a short loop of thin elastic into the neck hole and thread the arm strings through it. All of the string channels are too thin to use the size string you would usually want to use for a 1/4 scale doll. She is super floppy even when freshly restrung.

https://www.glaceleau.com/imgstore/unoa2ndinstructions1.jpg

 

Oh dear, well definitely post pics once you can, and I'm sure together we may be able to figure out either how she was strung or a new way to do it. There's power in the internet group collaboration.

Edit:

Oh gosh, looking at these instructions! You weren't kidding! Not that I ever thought you were but holy COW. I've never seen much like it either, except some parts of Iplehouse hips... It does look like you need a sort of metal folded pin as a threading tool. I assume maybe you don't have one but some wire could be used to make two of them.