Hi and welcome to BellyBelly.

Congratulations to your daughter and i wish her all the best for the up coming birth.
My first labor was 21hrs from start to finish. They say the average time for first time mums is about 12hrs.Hope for your daughter that the labour is not to long but long enough for you to get there in time.
I am very excited for you both and look forward to hearing all about the birth.
Take care Leah