Kelly said she and God knew the truth, and she would not be shaken by the opinions of others.
She also slammed any suggestions that she was hiding information from the police and was protecting Senzo's killer.
“One thing I will never do is protect someone who killed my daughter's father. At what expense?” she asked.
In an interview on SABC1's Real Goboza last weekend, Kelly said it hurt to be labelled a killer.
“I think that hurts because I'm not a killer. I may be a hell lot of things, but I am not a killer.”
Senzo's death has come under the microscope again after AfriForum last week announced it would launch an investigation into the murder.
A Sunday Independent report over the weekend claimed police covered up the murder and that the lead investigator, Colonel Bongani Gininda, had withheld crucial evidence.
The claims were denied by police.
Meanwhile, social media was filled with reaction to Kelly's comments, and soon her name topped the Twitter trends list as people weighed in.