Rebuilding Our Relationship

My sister is visiting for a while. She has anorexia, but she’s been doing so much better and I’m really happy about that. For the last 3 years, she and I haven’t been that close because of her eating disorder. I want to use her time visiting with me to talk to her and try to rebuild our sisterly relationship, but I don’t know how. She’s a completely different person because of her eating disorder so I feel like I’m trying to get to know a stranger. Any tips or advice?