I do see her work in the Strathearn Gallery in Crieff, it is all engraved and on Jane Charles blanks, now.
The image of the yellow bowl looks like a Jane Charles blank I've seen Julia's work on.
So I don't know if Julia made glass herself earlier on or not, and the wording on the site is a little vague.
But your perfume bottle (?) does look as if it could easily be something she made early on, if she did.
