Iranian authorities face backlash over alleged assault of teenage girl defying hijab law

year-old Iranian girl Armita Geravand is in critical condition after a confrontation over hijab law compliance.
Iranian authorities deny involvement, claim the girl fainted due to low blood pressure.
Incident draws comparisons to case of Mahsa Amini, whose death sparked nationwide protests.
Tight security imposed around victim with family banned from visiting or speaking publicly.
Western governments and rights groups express outrage and call for transparency.