No New Testament scripture implying that women were ordained by the apostles or other priesthood has been found. It is not just OK for women to take part in leading the congregation in prayer but highly recommended. In the absence of a male priesthood holder it is appropriate. The mother of Samuel talked with an angel of the Lord. The worthy can experience the guidance of angels.
Prayers are two way conversation with the lord.
We should be living close enough to god to expect and enjoy the exchange. Though this is common among true believers it is seldom mentioned because most churches teach the false doctrine that their no such thing as prophesy in our day. Direct revelation or prophesy is considered scripture. It is a contradiction to claim revelation and deny additional scripture. Is it difficult for a woman in our day to think in terms of becoming a prophetess when everyone says that their are no more prophets.