I gave you the answer

"Now I've seen it all." Ruby could not believe that someone could be so vicious. "What should we do now? If they are not going to meet up, how will we be able to know who the other person is?"

She thought about it and added, "What if we use the hard approach?"

"Hard approach?" He asked as she tapped his phone screen to dial a number.

She nodded. "We have tried to slowly expose her but this might not necessarily give us the desired results at the right time. Why don't we force her to spill the beans?"

He had thought of this too. However, "This method might not work either. It's highly likely that she has long vowed to take the truth to her grave. Even if she hasn't, she might not necessarily know anything helpful."