Like mate

Say you do get divorced, say you do kick the spouse out because you're tired of her going "Eh, just water spraying in the walls, nbd"

You're still gonna have, from the sounds of things, ninety year old copper pipes full of pinholes and probably way too much water pressure

Except instead of having someone text you about a leak and then go out for a haircut rather than turn the water off so you have to come home from work and turn the valve yourself, you'll now have... nothing?

I don't wanna be all "You have a plumbing problem not a relationship problem" because they clearly have relationship problems but THEY ALSO HAVE PLUMBING PROBLEMS and they can't get away with just fixing one or the other, it's gotta be both, and honestly, hand on heart, if it were me I'd start with the plumbing