I think the mere concept of this level of communication sounds very intimate -- very emotional. I would stop focusing on whether or not the science is presented in a way you expect it to be.
I'm sorry but her link with sickness emotional support and plants synergy/exchange network is cringe at best. And I'm open minded regarding science and status quo ..
Now that nature is a complex web of mutually beneficial interactions, why not (and I'd root for this actually).
If she could remove the emotional side of things it would help I believe.