Should I Call Cps?

My father just recently got out of prison and he wanted to change his life i am 20 years old and he was been in prison most of my life. He is on monitor and he came across this woman that he fell in love with and wanted to make a life with. sure enough this women gave him hiv after being diagnosed for over 3 years and she didnt tell him! And comes to find out when he was out looking for a job she would prostitute herself in her home while the kids are in the living room both under the age of 11.

she also spends her daughters checks on crystal meth and beer.
and she tell my dad is he calls cps on her or tries to get her introuble shes gonna say she walked into the room and saw him touching her kids!!!!!

i told him he neeeds to call the cops and he says no one will believe him cause hes a convicted felon.

But She gave him Hiv!!
what can i do about that?

i dont know what to do!
this stresses me out and i have my own little family to think
about but i love my dad..

and she got her income tax and split. leaving my dad with no money only tht apt till the end of the month and he cant just up and leave hes on monitor..

what do i do?
i want to help him if he cant call the cops should i make a report?
and tell them everything shes done to him and her kids??

please helpp me!