I've seen the Saints women play; and they are a solid, deep, and well-coached team.
As for not having played anyone; CNU, which is ranked #2, also undefeated, has a Massey SOS of 197, and a forward looking SOS of 205;
while St. Lawrence has a Massey SOS of 199, and a forward looking SOS of 171.
SLU has 4 wins ON THE ROAD over teams within the top 110, including winning a quality tournament at Williams, beating both the hosts and Hamilton from the fifth ranked NESCAC conference.
St. John Fisher in the same region as SLU is ranked, they beat a [winless at the time] visiting Clarkson team by 3, SLU beat them by 24.
If St. John Fisher is ranked, SLU should be ranked as well.