Hello Devans and welcome to our family, so glad you could join us and we look forward to hearing more about you and Bioko, that is an unusual name, does it have a special meaning?
Be aware that not all greys will talk but the odds are in your favor for most do but she has plenty of time yet, my grey didn't talk until she was one year of age and some here have ones that were even older so be patient and you will more than likely be rewarded with her talking and chattering away.
Its not true that if your bird whistles it won't talk, that is a load of garbage for my grey does a mean wolf whistle and she talks too but usually they start mimicing household sounds first like the phone, microwave and things like that.
Do read thru many of the threads here for lots of useful information and don't hesitate to ask questions you may have and we will help you in any way we can.
Thanks for sharing the picture of Bioko, she is a beautiful grey.