... I also do not fault a LEO for clearing their own house, might not be the best tactic, but it is not wrong to do either.
I agree with that; if you’re going to revert to on-duty, then on-duty rules apply. Part of clearing is identifying friend/foe before engaging, because you can’t take that bullet back.
Which is why I go feel it is unreasonable to believe she should have feared for her life.