Assalaamu alaykkum, in order to avoid aapa from hurting the feelings of hundreds of muslims who are already disturbed by what this poor sister has gone through, I ask you to move on and use the time for something beneficial in shaa Allah. Clearly she is 100 per cent right according to her own self and so there is no room for us to correct her anymore. She should forgive that poor sister for not being "Muslim according to the laws of Belgium/US/UK" but being Muslim for the sake of Allah. However, on the second thought she is donning niqaab for the sake of pleasing Allah and not for another muslim woman to judge her and blame her after her trauma, so aapa's forgiveness isnt necessary after all. with Allah lies her reward.