I could really use some advice about Islam culture (specifically Afghani culture)

Hey everyone. I am a Western European woman. I'm going to an Afghan family tomorrow to help their young son with homework through a volunteering organisation.I have long blond hair and I was wondering if I should cover up to make the family feel more at ease. Maybe there is there anything else I can do to make the family feel more comfortable? Any advice is welcome!

EDIT: It went well! I figured they were quite laid-back as the woman was not wearing a hijab. Felt a little silly with my hair tied back in a low bun 😂 I offered to take my shoes off and I think I sensed a bit of relief on their part, they immediately offered me slippers. I'll help the boy with the language and hopefully it'll up his grades. Thanks everyone for the advice!!