I don't see Jack putting up with this shit for much longer, there might be a last attempt to help her before he just punches out and is done with it all. No matter how much he loved her in the past, this is becoming way too much, the trench is becoming way too wide to bridge and if (or when) Dizzy Lizzy becomes lucid enough to understand her situation, she'll be devastated to realize how she turned him away with her behaviour. Frankly, even if she becomes normal again somehow, why should Jack stick around? If she's this fucking fragile mentally, if a relapse is this likely, splitting up and doing your own thing is perfectly valid. At best, he could/should give her a second chance, and the moment she gets into the whacky tobacky again, he should ditch her ass - even if she's still lucid at that point, no need to wait for her to flip her shitswitch.