If she is living at home, it might be helpful to find out what responsibilities she takes care of herself. Does she do her own laundry or let her mom do it? Does she make dinner sometimes and if so, how often? Does she take care of all the components of preparation of a meal from the planning to the shopping for ingredients to the preparation?
What are her household responsibilities that she is expected to take care of in the house?
You might also want to ask about how responsibilities were split between her parents at home. That might give you a birds eye view into what her expectations will be (of herself and of you).
Listen to how she talks about her responsibilities in school or at work and how she’s coping.
Is she used to having a lot going on (guests, multiple interests, chassadim, etc, or is her life fairly one dimensional to afford her greater control and a sense of calm?
Does she have an easygoing personality along with taking care of her responsibilities or does it stress her out when things don’t go her way (job related disappointments, factors out of her control)?