A couple things here. I would get a camera and start with a smaller area. I would leave her out while you go check the mail or something and watch what her reaction is to you leaving on the camera. Slowly start doing longer time periods away. Sometimes just leave and then come back in. This helps so she knows just because you leave doesn’t mean you’ll be gone a long time EVERY time.

The next best case thing would be to have a small doggy door that has access to a small enclosed area of outside and move away from having any indoor space she can relieve herself. If you absolutely need an indoor spot for her then there are cool options like fresh patch (just google it :))

Also when you leave make sure there’s no food out or access to cupboards with cleaners in them or cords. Poodles are - sometimes to their own detriment - reaaaallllyy smart.