at the point she did that, her husband had been framed by Walt (Sky was there when he handed her the video, so she knows she was part of that)

she knows Walt was the reason Hank was crippled and almost killed by cartel guys. Hank's recovery alone was rough as hell on her

So, yeah, the Flynn thing was a total bitch move, but i'd say losing her husband is punishment enough. saying she still needs to get got is pretty extra