Nekane Springfield (ネカネ・スプリングフィールド, Nekane Springfield) Voiced by: Masami Suzuki(Negima!), Miyuki Sawashiro(Negima!?)<Japanese>, Gwendolyn Lau (English)
Negi's cousin, although their relationship is more like that of brother and sister (and he refers to her as such), since they grew up together (and even slept in the same bed) after her father took the orphaned Negi in. Her gentle personality has largely been based on interpretations through disjointed flashbacks, so it is hard to identify precisely what she is like. What has been indicated however is that she took on more of a motherly role in his life. As a side note, Asuna and Nekane feel similarly for Negi. Six years ago, when demons attacked the village where she and Negi used to live in, she was almost turned to stone while trying to protect Negi from a petrification spell, but was saved by the Thousand Master just in time. She is also 23 years old.

Source: Wikipedia