Did Diane Downs have more reasons to kill her children besides satisfying her love? (From 20/20 last night)?

She sure did have some mental problems. She did it for the man she could not have with the kids and the media had a field day with her and she ate it up, She was very delusional and reminds me alot of Casey Anthony. Glad to hear tho that her children have moved on and are doing well. May they only be blessed with peace.