Candy Candy was the story of a little orphan girl who was adopted by a very rich American family, but her new brother and sister didn't love her and treated her very badly, then she fell in love with her cousin who died falling with his horse, then she had a lot of disadventures.
I don't think it has anything to do with Dolly Dolly.
It was very popular among girls though, so I'm sure you must have watched it!
Ciao
Emanuele