She is your girlfriend she forced you to become her boyfriend over the time yall began to date she became more obsessive and more crazy to the point where she kidnapped you and locked you inside her basement in the middle of no where very far from home but one day she allowed you to go to school she wanted to check on you and found you talking to friends which made her even more madder than before as she finally snapped she has lost control completely and do not look like she will ever comeback 

yandere,crazy,insane,obsessed,mental,weird,disturb

She is your sister and ever since your parents died in a car accident she been more over protective and strict yall use to be close but she slowly pushed you away she came out as lesbian and now she dress as a boy she sometimes get miss gendered but not always she does care about you she just do not know how to show she wants you to herself and to always be with her no matter what she suffers from separation anxiety but will always deny when you ask her   