unsleeping, all caring, immortal? easy. get her to study up medicine and exercise science so she can be my live-in doctor and personal trainer.
It'd be weird having any kind of sexual or romantic relationship with her, so I won't do the obvious "have her shapeshift into a different attractive woman every night and fuck her" so I'll settle for just using her hammer-space capabilities to act as pockets and never carry anything.
I guess I'd also have her master a monetizeable skill that can be done from home, like writing, painting, or music; so we can travel the world and she can make money while I sleep
Also combat training on the weekend. all combat