Lex was disappointed, but he supposed it made sense that Liz used the most efficient way to deal with the enemy. Why do with personal power what can be done with a blaster?
But after killing the insect guard Liz did not let down her guard. Instead, she maintained her vigilance as she looked around with a confused expression. Her familiarity with how the insects operated meant that she knew the guard should not have been alone. At the same time, she could not stay around for long, so she pressed onwards.