The Pennsylvania colony would be the colony of choice for a woman in the described situation. Its main thrust was not necessarily religious, though there were many Quakers, Amish, Mennonite, and others. The colony's founder, William Penn, espoused the value of religious freedom and democracy and invited Christians of many denominations into the governing bodies.The religious atmosphere was tolerant, unlike some of the other English colonies, and would allow for meeting people with diverse ways of thinking and valuing, particularly regarding the role of women. Colonists came from other parts of Europe, making the population more diverse and cosmopolitan than the eastern colonies.
As far as opportunity once the period of indentured servitude was completed, the Pennsylvania colony was progressive, and Philadelphia eventually emerged as America's premier city with many services for its citizens and initially, few taxes. Relationships with Native Americans were, unlike in most of the other colonies (except Maryland), relatively peaceful and just.
Cottage industries thrived in the Pennsylvania colony, and as a literate, hard worker, a young woman would have a better chance of finding opportunities to earn money and meet a man who could work independently. Quality public education for children became available early in the colony, another benefit of settling there to raise a family.