She also didn't seem sorry at all in Kara when she heard that someone ended up in jail, and died there, for her murder she orchestrated just to frame Lex.

To be fair, though, that guy didn't die because he was in jail; he had a terminal disease, which is how Lionel persuaded him to take the fall. Still, I agree with your overall point that Lana doesn't seem to be very concerned about who gets hurt as a consequence of her revenge plot.