Not too heavy at all.
Something I noticed while reading IHTT (and appreciated immensely but failed to mention - apologies) slapped me upside the head - in a good way - with this chapter, which is your practice of placing content/trigger warnings at the beginning of chapters containing potentially controversial/provocative content.
While it certainly is the readers' responsibility to curate - or at the very least, attempt to - their own experience according to their own specific preferences and personal requirements, many writers (not necessarily deliberately), usually by omission of relevant tags and/or offering vague content warnings, make doing so way more complicated than it needs to be. In some cases even making it impossible to avoid, regardless of how careful one is, provocative content and the unnecessary negative consequences thereof.
You don't do that. Your warnings are explicit, and give the reader ample opportunity to make a decision whether or not to continue. In addition to which, your handling of delicate matters, such as mental health or abuse, is compassionate and respectful.
And that's the point I'm getting at, albeit laboriously - you clearly respect your readers, your characters, and perhaps most importantly, the storytelling process. And that, Mr Writer-Dude, is one of the many reasons that your stories will live forever in your readers' hearts.
Anyway, that's my sappy comment quota for the day, yeah?
Thanks man, have a good one