The video of a young girl firing a machine gun is old and is not related to resistance against the Taliban in Afghanistan.
Using reverse image search, we found the same video on YouTube published on 26 January 2020. Although we could not determine the definitive source and location of the video, it is not from the Panjshir valley. Users also noted that people in the background were speaking in Baloch. The video has been in circulation since 2020 and is nowhere related to the recent crisis in Afghanistan. Hence we mark the claim as false.