Long story short she lied about never being filmed in a sexual act. Since her ex before me is emotional and mama-made that lie came back to bite her.
FIrst of all respect your mama and realize you can't tell your mama a god damn thing:henbron:
She probably already told her this and she is so ashamed of you thinking "I can't believe this is the son I raised

".
You let another nikkas bytch made actions hurt you?even though he blaytantly disrespected you if he sent it,and there should have been consequences for him.
You may have done the right thing making her your ex,but as a man you should have gave her the guidance of why righteous women don't do shyt like that with men who have them as unclaimables,not even with you. Then you cut her off,allow your mother to do her job in this world and nurture her,then she will go away on her own.
This all has to do with you not manning up and still being hurt,this will be your challenge to work on for your own growth,let your mama be a healer and tap into your own ability as a healer.
I've been in a similar situation about the a video recording of a woman I was with. I asked straight up just because it matters to me,and she told me no when I put her on the spot.Then one day when I was being open talking about my past,laughing and having a good time,she forgets she lied and confesses that one of her exes did record her in sexual acts. It was immediate bushes season for her,but that was in my pre righteous era,I am a different person to day. I would still cut her lose gracefully,which you seem to have done so far until now.