Do not confuse human love and God's Love. Human love is conditional and controlling. God's Love is unconditional and freeing.
Thus sins of the mother are present in the child.
Read John 9:1 where the man was blind from birth. Who sinned, the man or his father that caused the blindness? This was common belief at the time. When the disciples asked about it, Jesus replied that neither applied in this situation.
Healing the Man Born Blind 9:1 As He passed by, He saw a man blind from birth. 2 And His disciples asked Him, “Rabbi, who sinned, this man or his parents, that he would be born blind?
I am not the one confusing it.
John 9:1 is a perfect example of a tradition that is not scriptural, as what you are espousing. The tradition was that someone in his family sinned when the truth was quite opposite. Read Jesus' reply in John 9:3:
“Neither this man nor his parents sinned,” said Jesus, “but this happened so that the works of God might be displayed in him."
Clear?