Can you please tell about your mother's situation when she applied for h and cEvery case is unique in its own ways so it’s all dependent on how exceptional your situation is. There is no clear cut checklist for H and C application.
Think about it like this - immigration application made under H and C are very much like a court case so winning it depends solely on the merit of your case and if you really need any kind of relief.
It is not just another way of applying for PR. My mom is 50 - 48 when she applied for H and C. We won the case because I put in so much effort into preparing the documentation and I grew up in Canada. Immigration officer saw this and called me before issuing an approval letter.
Like I said, decisions are made on a case by case basis and you can’t copy someone’s case and try to fit some of the elements into yours.
Thanks