"Well of course you realise that in the olden days, Jewish women did not mix with the men and did not attend furnerals."
Very true, and also, at the time, unless they were in the upper echelons of power they were also (unfortunately) quite insignificant, so any mention at all is a surprise. Hence, she only pops up randomly at the important stages of the life of Jesus, and only referred to by some of the gospel writers.