Dividing a bay window into two rooms

[Aroraspractice]

Hi,
I am facing a dilemma of dividing an existing bathroom into two rooms.
But, in order to do so, I will have to divide the bay window into two parts and am unsure of its construction detail.
I will be making a stud partition wall, but how does that finish along the profile of the timber bay window.
Please help

[JaseyWasey]

Im no expert but you got any pictures ?

[welsh brickie]

how wide is the gap between the 2 opening sash windows if its timber studding your using then 70mm for the timber and 12.5mm each side for the plasterboard and alow 5mm each side for plaster.the studding will butt upto the window ,and when plastered the plaster will give to a neat finish line between the 2 windows