I found some other bits and pieces of information which might be interesting to you.
Helen is on the census for 1911 at 2 Wemyss St, Cowdenbeath...
Donald Robertson Head 38
Helen Wife 29 (b 1882)
Helen dau 9 (b abt 1902)
Robert son 8
Agnes dau 7
John son 6
Donald son 4
Maggie dau 2
Jessie dau 6 months
So Helen's parents were Donald Robertson and Helen Gibson, which I think you already know. (Donald Robertson had married Helen Gibson at Edinburgh in 1901).
...I think I saw an item attached to your tree for Helen,(b 1902) which is good proof that the above census is correct. It is the Borders Crossings image. Canada to USA. There are a lot of scribbles and ink on the page hiding some information, but if you look closely you will see that it gives her mother as being: "Helen Gibson, 2 Wemyss St, Cowdenbeath."
There is also an address in Indiana which is hidden by ink... 466? ....? St, Indiana. I think what happened there was that the address she had come from in Scotland was supposed to be given in that column and by mistake the address she was going to was typed in by mistake, and this is why there are so many changes.
Hope this helps,