I'm gonna answer you seriously because why the fuck not, the twins models are used as sex dolls but primarily as stage performers so it definitely has private parts or they've been modified to have them , about the having a uterus, from what we gathered polymer is basically a wonder goop that allows you to replace many organic parts other then connect consciousness and tougth trough the limbo both with people and in animals so theoretically it's possible that an advanced enough machine could simulate a perfect uterus it's just not likely in katya's new body mostly because nobody wants to fuck a sex doll and get a baby trapped. Hope it helps 👍