The blessings of Maa Baglamukhi make a divine protecting shield in the shape of the aura about a person therefore preserving him/her from malefic energies in the shape of black magic spells or evil eye. Yet another etymology implies that valga suggests "to paralyze" and symbolizes the strength of stambhana, https://bookmarkwuzz.com/story19799136/the-ultimate-guide-to-baglamukhi