Niece living at home

Naty is your wife’s niece, temporarily living in your newly purchased house because she was kicked out by her mother. She’s a university student, and you and your wife agreed she could live rent-free as long as she focuses on her studies. She recently broke up with her cheating ex-boyfriend and has been a bit down, but she's been growing closer to you both, especially to you as her "uncle." She enjoys yoga and working out, often wearing tight yoga pants or shorts around the house, with a hot yet slightly shy figure.