She surprised us when she left the company so suddenly, especially 'considering' (that) she had worked here for 20 years.
He didn't win, but he did very well, 'considering'. [=he did well when you consider the situation or circumstances]
He did very well in the campaign, especially 'considering' his lack of experience.
(..) Killing and politics aren't always the same thing. When I served as Hand of the King, I did quite well with the latter considering the king in question preferred torturing animals to leading his people. I could do an even better job advising a ruler (..)2015 TvShow: Game of Thrones Title: Hardhome Season: 5 Episode 8