I am fully aware that she won't leave after a short visit. And, if I am aware of this fact then surely a visa officer would realize this too.She will not leave after short visit, she will stay here as long as i am here. we are applying for more than 6 month,
IMO, you're risking another TRV refusal. Sorry to say this: Your employer has little or no knowledge about the TRV or SOWP process and criteria.
To reiterate:
Red Flag #1:
Your employer applying as your wife's authorized rep (like I mentioned earlier). Your wife is not hired by your employer. And, generally, employers do not file TRV/visitor visa applications.
Red Flag #2:
Applying for a TRV for a visit of more than 6 months = Definite intent to overstay her visit/not a typical visitor.
A TRV application is to be made for less than 6 months