Postpartum depression discussed in the form of a short horror story in the late 19th century wasn't in my bingo card!! I was left with so many unanswered questions

did her husband actually mean to imprison her? Did he genuinely believe that going to place would actually help? Why was the house inhabited? Is the woman who appeared in the wall was also imprisonned since she was shaking the bars? And they felt like they had understood each other and she was asking for help? Is it herself that she sees in the walls

the ending left me even more confused