Hello, I'm not here to give you hate, but I will be so kind as to give you some advice! *smiles*
Now, the first piece of advice is to not lie to people. The second piece is to support people who you care about and who care about you, like your sister! She's very kind, outgoing, funny, and an amazing author! She deserves some kindness and support through her hardships. *frowns a little* trust me, I'm a sister with a brother and she deserves not just real brother *smiles* which I believe you can be! I believe in you.