I'd say given the family history it's a strong possibility!
Would you be ok to wait until she's 18mo then try again? Formula has more vits etc. than cows milk anyway so I think it's better to keep her on it for a bit longer.
DS is MPI so we'll be doing a dairy trial at 18mo too
He is tolerating goats yoghurt and cheese ok, haven't tried milk yet, but that's a good sign!
DH is MPI and can't even tolerate any goats milk products
He's ok on soya though