IMO, one of the major objectives of marriage is starting a new family (ideally with kids but not necessarily).
If family is second priority for someone, it could not be more misaligned with the objectives of marriage.
Being hyper-focussed on anything, by the definition of hyper-focussed, usually means everything else suffers. If you're hyper-focussed on family, your career responsibilities would suffer. If you're hyper-focussed on career, your family responsibilities would suffer.
So if you're not looking for someone to build a family with, marriage with such a girl might work out. Otherwise, it would be pretty challenging IMO.