Hello softly softly and jonwarrn
I'm truly grateful for all your help and attention to my problem!
I've been following up on the leads you've kindly researched for me, especially the birth reg and the addresses.
I've got Margaret's death reg now. She's described as "widow of William Gordon Occupation not known". Margaret gassed herself on 12th March at 16 Jolliffe Street. Of course because the death was referred to the Coroner, there's 'no informant' named. The inquest was held 2 days later on 14 March.
I'm looking into further details soon.
Once again, thanks for helping me.

Melbell