I see your point but I wouldn't label LW as necessarily selfish or disgusting. That's a bit harsh.  She is grieving too (probably not to the extent as the mom is) and apparently has psychiatric issues if she is on meds. I also think it is too soon--the death is still so very fresh. looks like the burial will be in a couple of months. Maybe the Rawness of the loss will lessen slightly by then and LW will be more clearheaded. Right now the death is new and LW is not coping or thinking clearly which is to be expected. LW needs to step back, calm down, and get to a place where she can be rational. Maybe go to grief therapy to get a handle on herself. LW is thinking emotionally rather than rationally she should at the very least make an appearance. As far as the mom visiting the site--she should be allowed. She doesn't have to come inside the house when visiting. Sounds like it may be a large property. The gravesite. Maybe text beforehand. If the house sells--not sure how that work.