Chinese names: Gah-Ning
Although it is a potentially valid to use the slightly derogatory "cute" nickname, it is much more likely to be a more standard-sounding given name, for example 佳寧 or perhaps 嘉寧, both pronounced Jiāníng in Mandarin and Gā-nìhng in Cantonese. To my ear, both are female names. A quick Google returns quite a few profiles with this exact given name, overwhelmingly female.