I am not giving you a guarantee that it will be approve. But I would like to share my experience. I am a Filipino and I am a PR here in Canada. My husband is a Canadian citizen. I never had income for the last few years as I was at school, got pregnant and got a baby. So I don't have a Notice of Assessment or any income to meet the LICO for my mom's supervisa.
So basically, it's my husband who is the principal supporter for my mom. For the support letter, invitation letter and everything... It's his name first on there(but of course he included my name on the docs stating that I am his wife plus submitted a marriage certificate to back up the case).
It worked for us. Hopefully, it will for you too.