Bad parenthood does not explain everything.
I hope that Miss Chavez believes in God, if not, what i say will be irrelevant to her.
Obama's father was indeed a wicked man (seducing women and engaging in adulterous unions); his mother was everything but mentally stable. Is he doomed for that matter? Should he spend his life ruminating on his childhood?
In the Bible, Joseph grew up in a bigamous family. Sure, it was no big deal at that time. But anyway... His half siblings hated him and eventually sold him as a slave. Such a damage upbringing did not prevent God from working through him. And he accomplished God's will because he didn't spend his time whingeing about his past, but rather focused on God's truth and character.
Abraham's parents worshipped false gods. But, upon encountering the One True God, he forsake idols and is now the father of those who believe.
Serious Christians should not believe psychological lies which profess that human beings are what their parents make of them (see http://www.christiandiscernment.com/, the parent factor or god factor pdf). One can obey God's commands even if one comes from a lineage of wicked persons. One can be a mature Christian thanks to both Christ sacrifice and to the support of the Holy Spirit.
And sins of the fathers do not cause sins of adult children. God is a God of individual responsibility.
It is also not Christian to lash out on others' shortcomings.
I'd also suggest reading : "nice people or new men" by C.S. Lewis. God does not only care that people turn away from sin and publicly expose their prefect non divorced Christian families (pharisees' pride). The wrecked son of adulterous black man and irresponsible white woman is a sheep as treasured as any other, for redemption is not mere improvement of families. It is bringing a New Reign. Read your Bible more carefully.