1. No i didnt reapplied myself, i took help of professional agent to file on behalf of my mom and sis and he did it offline mode.
2. Yes itinerary letter was submitted mentioning the previous refusal and further supporting documents were provided too.
3. Neither I have mentioned in this forum nor in my sister's visa application that she is just to assist my mom's travel. She is applying to visit canada for tourism and to attend my convocation just as same as my mom's profile.
@Bryanna if u can assist me with your suggestion to reapply for my sister, Since my father is no more, i desperately want my mom and sis to attend my convocation and see me graduate.