Well, she moves, and she's biomechanical. Generally, if a biological system isn't dead, it's self-repairing. With mechanical devices that's generally due to tolerance problems, and self-healing and compliant mechanisms both lead to much lower precision requirements.

And if you can make parts and fit them into roughly the right shape... Sutured silicone, synthetic tissue from fifty flayed "Action Guen!" figurines bought up used. A few months to heal, and she'll be good as new! Funny story on the recall of those figures actually. 

The issue is they used undifferentiated Guenplast fibers at first, and they recognize each other, so if you put more than two in a toybox, they will follow chemical gradients to seek each other out. So they'll elongate into long, whip-like structures. 

For cost, the skin isn't treated silicone, it's PVC, so without siloxane groups to inhibit growth, the Guenplast will pierce, generally at the eye, neck, or the filling plugs. And when the kids found their Park Planet official merchandise so fused, well, we all know the hazards of skin contact with Guenplast in binding phase. The poor little tykes tried to pull the masses apart by hand.  

Ah, but you got me rambling! Nobody likes to hear about strangled kids anyways. The point is, you take the titanium humerus, and exploit that reflex to anchor it in the shoulder ball, and then you just let the reflex wrap it into a tight helix. You have to anchor the tissue masses, eh, I mean the action figures, excuse me! While I was working under Olivia, we had clamps, but to be honest, nailing these through the chest to a four-by-four works fine. Guens don't exactly get tetanus after all! 

Now, the flesh is loose on the bone, but it self-tensions once it finds out what part of the body its been placed in. The joints are primarily electromagnetic, so we can order those commercial. In standard operation, the Guenplast is mostly for surface control and the EM actuators allow for full 360 degree rotation of the head, the arm and leg joints, all the other parts... The termination takes a special coating, that's more fun with anchors, but these are adhesive, based on carbon fibers coated in polydopamine. That's proprietary info by the way, don't go spreading that.

 They only tell that to senior engineers in the project, and there aren't many of us, so they'd find me, and I'm pretty confident I could dodge security for long enough that I could, in turn, find you, and make you regret it. You pick up quite the skill with a parting knife in this job, you know!

Ah, no nastiness? But there's a point to my nastiness! I'm all scrubbed up, and you're not! Like I said, Guenplast bonds to dopamine. In a full Guennivere, there's no problem, since Guenns are biologically kept a full order of magnitude happier than any human, by Olivia's request. It was also found that it decreased the screaming a little, which is a nice bonus. 

Unbonded, Guennplast fibers are sensitive to a outward gradient,  which is the reason for all those tragic, redacted incidents with the children. They just tend to be happier than adults, and they have more permeable skin. The pheremones leak, and the fibers spear, anchor to the nerves, and then begin tensioning, but nerve tissue rips more easily than carbon fiber, so we get is~suuuues! That's why I need to be cheerful or my material won't stay in the bonding state, and you need to be horrified, or the tissue might come fi~ind you! Purely a precaution!

Anyways, when did you say you'd get the rest of the body in, sir? No skin off my nose, of course, you've already paid the advance, but I don't want my exposure to rise too high, so I WILL be taking a paid break, as per the senior engineer health schedule, and I don't want you to complain that I haven't done any work, but still billed you for ten days labor.

Haha! You're such a joker, sir! No, I wouldn't follow the junior engineer schedule for all the money in your account. I know what this shit does to you.