The purpose of reconsideration is that IRCC made an error in their laws/regulations in refusing the visa. So you address the errors in law by showing that all documentation provided was adequate in being approved for a study permit (e.g husband not accompanying, paying for own trip, only coming for two weeks). Providing new documentation is not proving error in law but a new application to address reasons for refusal.She is my sister in law. So my husband means her brother invited her. So should i add my bank statement and her husband’s bank statement to support more financially. Or is it not allowed in reconsideration