You'd think after three movies she'd be wiser by now...

Yet she's still as mysterious, hiding key info from others, and not making sure the aliens never return by checking the nooks and crannies before deciding to go to hypersleep or other..

Second movie she did not make sure there are was another Marine ship on standby in case something goes wrong with the away team nor have adequate protection against organic acid. How does such a large ship like the USS Sulaco only have two teams of Marines and no one else anyway? Whole franchise should've ended at 2 when she wasn't double sure she got the required things to make her want to tag along. She should've also demanded a senior position, to take command if anything went awry. Instead they brought in a bunch of low IQ grunts and a commander that had barely any real world combat experience.