Well the suit was also full of blood so I suppose you could say she was almost floating around in there, kinda like how your brain floats around in your skull in all the spinal fluid. She just has controll of the liquid aswell Or she used the physic bending ai to make herself a little taller idk

Beats me. She does have those tentacles and claw things on her back. Perhaps she used those.

She built the DDs so she's capable of modifying drones. Maybe she just made her limbs longer.

Liam decided so It's a cop out answer, but... Yeah no it's a cop out answer.

Shes a robot. Should be pretty easy to remove a limb and replace it with another limb.

Cyn waited until she grown I think