She keeps trying to kill herself because of him like 2 more times. you are defending him by going, "omg, he has poor communication skills, but it gets better!!!!!"
Like plenty of people under go far more horrific abuse and aren't half as awful as him. I'm sorry, but poor communication between them does not excuse people from becoming abusers. He might not have laid his hands directly on her, but neglect and emotional stuff ARE abuse. There's even laws against minors, elders, and I/DD that write that out.
If you neglect a child, they die.
If you neglect your wife in these types of settings, they die.
Just because He's suddenly SORRY after she has to try to kill herself multiple times that he's like, wow, I can't just neglect her anymore, I'll be a good person doesn't make him a good person. This novel essentially her coming to terms she can't leave cause she's stuck in a fucked up situation due to his magical lineage and just comes to terms. And somehow, he's a good person because he remembers she's a person too! WOW, SUCH ROMANCE.