Hi, I don't know about a group in Haringey specifically but there is an Iranian Association which offers advice and guidance to the Iranian Community in London including refugees and asylum seekers. You should be able to meet other Iranian women here. There is Farsi spoken and there are interpreters if you need any help. They are based near Ravenscourt Park tube which is in West London. The address is:

Palingswick House (Annexe)
241 King Street
London
W6 9LP

The phone number is:
020 8741 2304

Email address: info@iranian-association.org.uk

Website: www.iranianassociation.org.uk

I hope this helps for now.