Rather than any attempt at temptation and corruption, Mark Rein Hagen opted to punish characters with schizophrenia for stealing candy bars. Because that's what I think of when I hear gothic horror.
Madness string 49772
I'm glad that you've clearly never experienced that kind of grief and can't relate, but you really shouldn't jump to the worst conclusion of others based on your own experiences. Strong feelings don't have to be romantic to be strong or to be valid, and you minimize the person's very valid feelings of love and grief by claiming they must be.