Trying to crack this case?

Question

This girl ive known in real life (my moms bosses daughter)

Claims she is turning 15, on january 10.

What year would she be born in.

Last time i knew she was going to be 13.

i was like what the h**l.

So if shes turning 15 this year on january 10, what birthdate would it be?

i wanna quiz her.

Answer 1

2009

-   15

--------

1994

1/10/1994

Answer 2

she'd b born in 1994