I think that the main reason Katherine hates Tucker because she sees him as a threat to "Saint Victor". Do you all remember when it was Jack who was going against Victor, she had no problem keeping his family's company away from him. So now she is so angry at Tucker because he kept a little white lie to himself about Victor's whereabouts. GMAB Katherine, you are a real piece of work to hate your own son for being a shrewd business man in building his own empire. It's bad enough Katherine abandoned him when he was a baby, she can't support him or be there for now because she sees him as a threat to Victor, I am wondering if her "precious" Brock was a business man and wanted to be an equal to Victor would she turn on him just like she has turned on Tucker? Katherine is the worst mother on the show. So what Sharon has made some mistakes, but she could never be as bad of a mother than Katherine. At least Sharon never really abandoned her children because some man wouldn't accept them into the family or kicks her children while they are down or put some friendship a head of them. That is all Katherine. Tucker should wash his hands of her and go and get his adopted mother and bring her to Genoa City and treat her like a Queen at least she wanted him since the day he was born. Katherine is disgusting. It's one thing to have a close friendship with someone, but it's another to put that friendship ahead of your own flesh and blood especially your own children. And Tucker was right when he told that Victor is the son she wished that she had.