In the series finale, she gunned down Lionel (an alternate reality version) and is later killed by Lex after revealing he's been aware that they're siblings but not before she poisoned his brother with a toxin that effectively erases all of his memories.
She gunned down Lionel (an alternate reality version). This was in the series finale. She is later killed by Lex after. This was in the series finale. She was revealing he's been aware that they're siblings but not before she poisoned his brother with a toxin. This was in the series finale. This toxin effectively erases all of his memories.