Personally, I think it should've ended at season 1, it had a great ending with them in the car. S2 and s3 was unnecessary and dragged out.
Compared to other shows, the CTB scene was surprisingly really well-made! I think they got the mirror scene (when she's in her old clothes) spot on.
In my experience, that episode specifically was incredibly accurate at depicting the final day/s before suicide.
I don't think I've ever seen a show like this! It's such a shame there aren't more like it.
PS: The Gorey bit in the bath shouldn't have been cut out, It's what made the show REAL!
If the viewer doesn't want to watch it, then they can skip it, but don't ruin it for the rest of us!