أحسن الله إليكم My non-practicing parents won’t allow marriage until I finish university and expect me to study/work. I live in the West. I don’t want to study due to gender-mixing, but staying home would cause family problems. Idk what other options I have as a sister. What would you advise me?

Obedience to parents is in what is permissible and not in sin, so mixed study is not something you owe them, but do not simply refuse and leave it there. Look for the alternative, an online degree or a programme that is not mixed, so that the family has a way out too, and advising them gently is not uquq, and once you have advised you are not held responsible beyond your ability. As for marriage, if you are of legal age and your parents are preventing marriage altogether despite suitable brothers proposing, you can take your case to a Muslim judge to help you.