Struggling with my dog's behavior

I am spilt with my emotions and mental state. I have a dog that sometimes helps with my mental health and that I love so much but other times she's not listening she using the bathroom inside the house she's trying to dig out of the pin outside even when I haven't been inside for more then 5 minutes and she knows she always comes back inside. So I'm split between giving her up or keeping her. Some days she stresses me out and makes me mad and other days she doesn't. I know she causes me stress right now and I can't have that because my stress levels are already high but I love her and just the thought of giving her to someone else makes me cry. I don't know what to do. Can someone help me please?