Re: I really hate this name.
The Harry Potter association is too strong for me: I hate Dolores! Jane is her mn, too. Although I admit, it sounds good. Just had to point that out. I like your suggestion of Dolores Ivy.
How about:
Dolores Eve
Dolores June
Dolores Niamh
Dolores Elise
Dolores Eloise Penelope
Try double mns or one syllable mns.