And I think on purpose, either to hide what will happen with the experiments or they just don’t need much more than what is needed to drive the plot, but…
As I think about it, the experiments might not be for Helly (good chance it is, why else would she do it to herself), but it could be to create a person that is un affected by the “tempers”. A super being of sorts. I would imagine to lead the company/ cult.

But it’s hard to say.