Doubts about the cable run

I am observing signs of stress and other behaviour that indicates the cable run is a bad idea. I guess I knew it would be but I wanted to try it. When I let Daphne off the cable, after a half hour or less, she is frantic and overly needy. The ingratiating behaviour indicates that she may feel she is being punished. She seem okay when both dogs are out there, but Mona ends up sitting by the door and Daphne is alone. She has relaxed and sniffs around, using the area available to her on the cable, but there are a few aspects that a chain link kennel would provide that the cable trolley does not.

A dog needs to feel safe and protected in order to relax. They need to be "off duty" in order to not create problems. A chain link kennel may be okay with a dog house inside it. They dog has no choices and no responsibility. No call to guard anything or alert anyone. A crate is excellent because the dog can do nothing but go to sleep, and they sleep quite well. Passing an 8 hour day sleeping is no problem at all as long as they have activities at other times. But outside dogs
tend to take responsibility for guarding or escaping. Back yard dogs will develop barking and/or digging habits that do not go away. That is why I have been so careful about putting Daphne on the cable. It works as long as she is actively playing, but when she wants to lie down and sleep, she has no clear "off duty" place to go. I am not sure a dog house (or dogloo) would do the trick. Usually a dog has to have no choice but to lie in the crate, or else it will go seek out activity. Yesterday when she was tired of being on the cable, she started barking obnoxiously. I had to come out and spray her with bitter apple. As I left, she whined so I sprayed her again. The third time she was quiet, and I let her off the cable.

Yesterday I felt that I cannot keep her. She is too big and I just don't have the energy for it anymore. Maybe I will find the energy to interact with potential owners again. I was awfully burned out after the last roller coaster with a potential owner. Kayleigh loves her, and so do I, but she needs a best friend. She still jumps on Mona and interferes in my relationship with Mona. I know Daphne can spend more time in the crate, but meeting the needs of two dogs
separately is just more time and logistics than I can manage right now. I gave the cable run a try (to prevent her from chasing chickens and jumping on the door to be let back inside) but it only works when others are out there.