while plaid is technology right, i don’t think explaining how it works will help her at this point in her life.
she most probably is hurting and blames g-d (she believes in him or she wouldn’t worry about gehenom)
just be there for her and explain that what ever bad happened doesn’t mean g-d doesn’t love her, and all is for the best etc…
of course this should be in addition to asking a professional for advice not just here (as good as the advice is)