Smarthouse: SF/Horror

Buying the house crossed a line, and he knew it, but he couldn't stop himself. She never wanted him to be too involved, too greedy, too attached. She wouldn't wear a ring, she wouldn't sign on-ship as a dependent, she'd chosen him because his work took him away for months or even years. He knew that if he ever quit his job, she'd quit him within weeks. But he loved her, and he thought that she loved him, too, in her own way, which was more than he thought he could ever have counted on getting. But he bought the house. A smarthouse could watch over her while he was far away, he hoped, and it could send transmissions--

Inspiration: "I Walk the Line" by Johnny Cash, plus a real estate listing that popped up when I googled "reflection" from the image of The Bean.
Story Potential: High? Though I'm a bit worried this isn't original enough.
Notes: A story told in transmissions. A horror SF story. At first the house keeps tabs, but then its need to care for her is frustrated by her fear of attachment. So eventually it arranges things so that she can't escape, and it does something to her sense of time so that by the time he gets back, a century will have passed with her as its prisoner.