Correctly guessed by Protodude some days ago, finally the official introduction of Ferham is here via the Official Facebook Page. The small bio that accompanies the artwork reads:
Mega Man X DiVE Developer Diary - Character File - Ferham
She made her debut in "Mega X Man Command Mission" .
Her whip, while laser-like, has been revealed to be electromagnetic...
And that's all for today! The development team didn't share her 3D model like usually do with character introductions. Maybe another day!