Ripley embodies maternal instincts while her companions typically fall victim to obsessive curiosity, bravado, and ruthlessness.
EEEEEEEEEEEEEEEEEeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeh...
There are... "feminine" ideas in alien, and I admittedly haven't seen it in ages, but it's hardly an explicitly "about women, produced/directed by women, staring proud feminist protagonists." type of film. Ripley is the person on the ship that understands what the fuck is up, and behaves intelligently while everyone else (including the robot) gets slaughtered. But that's mostly the horror trappings, rather than her being an explicit proud feminist protagonist. She ends up as a feminist icon, absolutely, but she's a competent person who reacts correctly to the situation. It's not "us gals against the world, fuck these butch guys". Also, the more explicit message is "fuck the Weyland-Yutani Corporation and inhumane capitalism"... also "follow workplace safety protocols, always wear PPE when dealing with non-earth planets and alien fauna"