She is saying 'Hinagana', because a special 'Designer' version of a Pomera DM20 called Pomera DM20Y was released, but had the typo of 'Hinagana' on the button of a keyboard rather than 'Hiragana', which is a form of Japanese alphabet.

Japanese news link : http://bit.ly/d5uTzY
Pomera DM20 : http://bit.ly/8FY4Gc
Pomera DM20Y [Takuya Yura design] : http://bit.ly/acb0Rg

The joke being of course, her name being 'Hina'.