Because she is pretty reliable most of the time, I would continue taking her out. If you can't keep an eye on her, and I mean a close eye on her, she should be in an x pen. Put her bed, toys, water, pee pad, etc in x pen. I know your husband is frustrated with her, but sadly he is a big part of the problem. By giving her too much room in the beginning, it's created bad habits. Baby gates are only temporary. If he allowed them in the first place, she probably would have been housebroken by now and the gates would be gone. Good luck!
Linda, Bella 9 yrs old, Freddie 8 yrs old, & Scudder 7 yrs old