Of course Hayley is credible and doesn't lie about any of the cases she discusses, although I doubt the victims loved ones would say the same.
It was only a few weeks ago she spread some of the most vile and hurtful rumours about someone's husband that had passed away- due to natural causes, and not by substance misuse or because he had been up to no good, like Hayley had made everyone believe.
And then when his partner contacted her to ask her to please stop, she was then bullied by Hayleys minions, and to top it off she still held a live and continued with her deluded bullshit.
Yep, i guess that's a very credible character.