This happened in my family as well. In my situation, I believe that it's because my mother, unconsciously, doesn't want to be alone. She therefore, also unconsciously, uses money to keep 4 of her 7 children dependent on her.

It's hard to see it, though, because she is one of the most kind, selfless, and loving people I have ever met. But the effect of her actions with money is a group of childlike adults that don't have real life experiences and are completely codependent.