Positive reinforcements is what your dogs needs. Never EVER call her over to you to scald her, she will think that when she comes to you she's in trouble, its as simple as that. If you need to scald her for doing something wrong it MUST be immediate, you MUST catch her in the act and you MUST go to her. You are going to have to teach her that coming to you is FUN FUN FUN and when she comes she gets lots of praise, petting, treats, games etc.
In essence you need to start from scratch, but that will be hard because she is already thinking 'when i come i am in trouble'.
With the peeing....give it 15 minutes after feed then take her to the toilet. If she pees, great!! PRAISE PRAISE and more PRAISE (good dog fido, well done, good dog) dogs are not dumb she will soon learn that she goes outside to pee she's gets praised and you are HAPPY. All this dog wants to do is make YOU happy. But in return you must make her happy also.... As to the fact that you aren't home for 12 hours and she's left alone....well you've been slammed enough for that
you dont need me to lecture you on that
Good luck with the recall and keep working with the dog, training doesn't stop just because you aren't at dog school, training is consistent, after all we learn every day so why should it be different for dogs
Trina