Wow, never saw a Sergal so modified, very cool idea!
Whats about her throath?
Looks like there is a bit of skin (maybe burned?) left, see the same under the tail, tell me more :D

oh no this is just a softer non metallic synthetic membrane, in the case of a tail it's just to accomodate both the addition of other cables in case she plugs it to large mechanical constructs and the vasodilatation (don't know what the term would be for artificial cables) of some of the cables that use hydrolics to exert a certain force

Okay, thanks for explanation!
You wrote in the description that she has a organic brain left, so she has some natural nerves with those the Serg can interact?
Im not really into Scifi, but how i told ya, the idea is very cool :D
Just having a bunch of question which popping up into my brain...
Has she emotions, caused by the natural brain?
Her tail is intresting too, looks like she can grab stuff with it?
Sorry for all the spam, but too many questions, screaming for answers x.x

no natural nerves to speak of. beyond the spinal chord at which the organic part stops there is only a biologic/technologic interface.
there is, much like in a normal body an afferent and efferent signalisation way which among other things allow to replicate normal sensory abilities such as sight , smells and touch where what the body picks up is transmitted and translated into something the brain can read and use and vice versa the other way around.
think of it as one full bodied prosthetic for a person. (in the clothed piece the description explains roughly her thought process)

as how she ended up like that and why well... let's just say she 'had' some unfortunate series of accidents that required her to replace broken parts over and over till she got to where she wanted to be