They wouldn't be the first ones brought back from the dead on that show! I'm thinking it might be the (previously deceased) father of Zach, (Alex), or the (previously deceased) brother of Zach (Michael). Can't figure out how Janet would know any of the bunch, though. Only in soapland!
She went on and on about "a mother's love" and what SHE had done, was "out of love for Amanda" and how she had never even considered the fact that what she had done, could have harmed or killed others.
Alex and Michael aren't coming back....the "SATIN SLAYER" is a WOMAN!