+1
I always figured the Alien was super intelligent. I mean, there's a blue ray mist of light protecting the eggs. That's some pretty good technology for a giant cockroach penis head.
I think the mother alien sniffed out Ripleys white panties, and decided to follow her, using binoculars to spy on her as she ran through the steam, and then aboard the escape vagina.
When the mother alien hid among the tubes, she was waiting for Ripley to be at her most vulnerable so she could get revenge for her slaughtered babies that these incredibly attractive earthlings had destroyed and meddled with, with white panties on, sweating.