Excerpt from article from Canon lawyer Ed Condon:
The elusive historical figure of the deaconess resurfaces from time to time in Church debates, usually when discussing how to better incorporate women into the leadership and governance of the Church. Deaconesses in the early Church were a fact: they existed and there is reference to them in numerous documents dating back even to the Apostolic period. It seems, from the body of historical evidence available, that they had a definite place within the structure of the Church, at least in some dioceses, and were appointed through some kind of laying-on of hands.
It is reasonable to conclude that the separate ministries were appropriate for the time. An underlying question is whether the Spirit reveals an unfolding revelation, that is, that God only gives us as much as we can culturally handle, or the deposit of revelation does not become more clear over time, all the clarity necessary can be gleaned from words written long ago, that the Spirit is actually alive and present in unchanging cultural mores.
In other words, the culture of 2000 years ago predictably pressured the Church to remain fairly stubborn about giving women higher-ranking roles. Were they closed to the Spirit or did the Spirit find such giving of women higher-ranking roles a step too difficult for followers to incorporate, that their faith was not ready for such a suggestion or discussion? Or, is the Spirit absolutely saying-for-all-eternity that women will never rightfully serve the same sacramental roles that men do?
To me, the roles designated in Biblical times were a matter of survival. The social and cultural pressures were purposeful.
Today what is appropriate? God only knows.
One interesting theological angle to this: Does God wait for the Church to decide that Catholic women can be deacons before He calls them to do so, or is a woman called to be a deacon also called to belong to another denomination?