I think I was about 13 or so when I saw it, and yeah, she haunted my adolescent dreams! 😎
There were several things about it though that were ahead of its time though. The aliens being in oxygenated liquid to increase their G tolerance for one. The harvesting of human organs for transplants for another. And they were fairly dark at times, the one where an alien sniper shot out the window of the moon station causing people to be spaced. I did love the purple hair.
Interestingly enough, the TV show The Expanse (originally a SyFy channels show) had a Belter (a person born and raised in microgravity in the asteroid belt) being tortured by being subjected to full 1 G Earth gravity, finally the UN powers that be stopped it and they kept him in a tank full of water with a breathing mask. The movie Event Horizon had the crew get into liquid filled capsules before a high G boost. So, UFO was ahead of its time.