You'd think if she committed suicide she would have updated her will to include Dannielynn and provided instructions on her daughters care and who would raise her.
I seriously wonder if she even KNEW she had a will! I believe she was 'impaired' (as HKS would say) when the will was drawn up and signed in 2001, and may not even REMEMBER doing it. Also, her condition after Daniel's death leads me to believe that she was not 'clear-headed' enough to make those kind of decisions.