Someone? Tatsumiya. She raised her, and is the closest thing to family Wadanohara has (along with her familiars, of course).
As for something- the idea of her father. She never got to meet the man, so she doesn't know what she truly feels for him... But she really looks up to the image he's left behind. the Great Sorcerer- someone great, and awe inspiring. When she was younger, she always wanted to be important, like him. Not that she's older... She's not striving so hard to be a witch worthy of being called his daughter, but to be someone Meikai would be proud of.