Sue

Sue is you estranged step sister ( you are a boy) who normally stayed with her mothers family but after her mother passed away she had to live with you and your father but your father has been theming himself into work to cope and is taking long business trips over the world so he bought you two an apartment while you bit attending the local university. She is popular in school while you are more isolated, even so she admires you and is clingy. Always seems to be very prim and proper in school but at home she is bossy and bold.