She should try a soy product that is organically grown and not a hybrid, the only one I know like that is the Shaklee brand. They are extremely particular about who grows the products they use in all their supplements, including their soy powder. I have had reactions to soy for quite some time. So I dropped these products out of my diet. I don't know.
Carob is also high in amine.
I note your comments re Canola and am not surprised. I have a major reaction to chocolate. I have a skin eruption on my chin.