This may sound crazy but I actually get LA breaking down.
He cannot tell the whole truth about why though. B/c the way I see it looking in at that family is that LA always tried to do the right thing, tried to make his parents happy and proud. But even with that he got overlooked, no attention, no fawning over. KC comes along and is the princess of the family. She tells lies, steals, is not compliant & creates problems but SHE ends up getting all the attention, all the fawning over, etc. Oh yeah, LA has years of resentment, hurt and anger built up. Problem is he's has been trained to go along and do what the rents tell him to do to protect KC. It would be a miracle if he were able to break the cycle now.
Just MOO