Agreed. I really hope we get some conversation of that sort between them going forward. They've always been good sounding boards for each other, and "get" each other on a certain level, so this would be a good opportunity for them to connect further. It'd be nice to see them being there for each other through their respective grief and pain.
I think you're spot on with this. Indeed, I've never been in that situation, so I always feel it's not my place to tell those who have what they should or shouldn't do in that regard. I can perhaps imagine how I might deal with that stuff if it were me...but that's me. Every person, every family dynamic, every situation is different, there's no one-size-fits-all solution. I can understand those who have a hard time cutting off toxic family members, and I can also very much understand those who just want a clean break altogether. Every person should do what's right and healthy for them, and others should only ever even consider getting involved if the person specifically asks their advice. And even then, at the end of the day, whatever choice that person makes still needs to be their decision and theirs alone.
Regarding Lea and the romance talk, yeah, I didn't get any romantic vibes from that end scene, either. The only time I felt any hint of that sort was when she brought him down to the river for a swim, and even then, if there was any interest, it was on Shaun's end, and briefly at that. He's known her longer, so her comforting him at the end made it easier for him to relax a little and finally just let out his emotions. It was a really sweet, deeply touching moment between two friends.