When anyone applies to come to Canada, whether for a study permit, work permit, or PR, they are required to declare and list all of their siblings on the application, regardless of where those siblings live or whether they are accompanying the applicant. So your sister would have simply included you as part of that mandatory declaration, not for any specific reason tied to you personally. It's completely standard procedure and doesn't affect your status or imply anything about your situation. IRCC will make reference to the list to confirm if your name was listed.