MornaBaine wrote: »Don't know if she's the "most powerful" but Queen Arzhela of Evermore in Bangkorai is a badass.
*SPOILERS INCOMING!*
This cousin of High King Emeric loses her husband and both her son and daughter all in different questlines. Yet this grieving widow confronts a traitor, takes on Septima Tharn (another powerful woman!), dons armor and fights at Emeric's side in a pretty epic battle. She does not let all her personal tragedy stop her from tending to the welfare of her people and being in all ways a Queen.
There's a reason my pirate character named her ship The Queen Arzhela's Revenge and is a total fangirl of Evermore's Queen! LOL
Lord Vivec
Almalexia is powerful, but both her artificial godhood and her sanity runs out relatively quickly post-ESO.
Queen Arzhela is a pretty good pick.
Ayrenn is a capable leader and a experienced adventurer, so maybe.
LadyNalcarya wrote: »Alessia is another badass character. Imo, she's much more impressive than Tiber Septim: she was born as a slave and became an empress.
Azura is a Daedra @Insane
But the OP specifically asked which non-daedra female NPC is the most powerful.
I totally forgot Arzhela, I was thinking more of female bosses in the game that you have to fight. Which don't really exist. So yes I vote for the queen.