I will, however try to do my very best to give you the most accurate description of her voice.

The character is an animatronic from F.N.a.R, with an adult/young adult female voice. 

Her voice would be soft, quiet, it would be very similar to Baby's voice from Five Nights at Freddy's Sister Location.

Take a listen here if you haven't heard it (from 0:30):

https://www.youtube.com/watch?v=zlqvyzIH_9c

If I base myself on the video above, the voice should be a deeper, and less "hesitating". However, it will be asked to make longer pauses between the lines for the auditionning. If casted, the voice actor should send each line separately (around 15)

It is important to note that the Female Animatronic's voice shouldn't be whispered: it will be played from far away. 

British english would be the best that could fit her voice, however it's optional.

For the intonation, the voice should rather be monotone, a bit gloomy, but not completely sad. 

I would ask you to record the line multiple times, with different intonations!

Each line would be quite short. 4 lines together form a paragraph. Despite the long breaks, there shouldn't be any noticeable interruption between the lines in 1 paragraph!