Will my Kai-Ken (Toru-Inu) become a brindle?

I have recently purchased a Kai-Ken cross Aidi puppy (She is too young to take home as of yet as she is only 3 weeks old and i only have a very young puppy photo of her until this Friday so unfortunately can not provide photographs just yet)

Her mother was a black (Kuro-Tora) Kai-Ken, the father was a pure white Aidi.
My puppy is all black except a white patch on her chest and just under her chin.

Now i know Kai puppies are born a solid color and their brindle markings develop as they age, sometimes taking as long as five years before fully showing. Would there be a chance of her black becoming brindle as she is a mix or would she most likely stay black?

Thank you for reading/replying, if you do!