Hi,
I've hit a bit of a brick wall

I'm trying to find out what happened to my Great Grand Aunt, Mary Magdelene Ross b. 20th December 1900 in Poplar.
I've got her on the 1911 census but nothing concrete after that, which is strange as her siblings are very traceable and sociable so there's photo's, but nothing on Mary.
Can anybody through some light on this for me ?