You said, “I surely hope his victims countersue her...”
But as far as I know, she had no role in her son’s crimes.
“she had no role in her son’s crimes”
She didn’t ‘suffer’ the 86 minute execution, either. It seems she is suing in the name of her son, who DID commit the crimes.
I’m not a lawyer, but it seems she would have to establish a probate in her son’s name to sue in his behalf. Therefore, any proceeds to his estate should be counter-suable by survivors of his victim(s).