Devi Bagala is definitely the deity of Bagalamukhi Mantra. She's also known as 'Valgamukhi'. 'Bagala' or 'Vagla' pretty much usually means a 'rope' or simply a 'bridle' – that may be place during the mouth to manage the movements of tongue - and 'mukhi' signifies 'faced'. She may be the https://www.youtube.com/watch?v=CQDKEh9UjJA