Well her arc was done because they made it so. If they hadn't forced her exit from the show, they could have easily done it later and more organically. The time she decided to retire from viking life and build a hut, start a village, come out of retirement to defend her people all happened within the span of a few episodes. It was ridiculous. They should have taken their time with it and done a season long arc. Where did all these people come from anyways, I thought she was meant to be alone? It also would have been good if she battled a more notable opponent in the end rather than some nobody bandit. Someone that was actually built up to be a great threat. That way her sacrifice in the end would have actually felt earned.
She was also the last remaining original cast member still left on the show, unless they bring back Floki or Rollo. It feels wrong getting rid of her so soon.
