Hi and welcome to YT! God bless you for rescuing this beautiful little girl!
My Annie is a rescue too, and after 4 months, I still cannot housebreak her. I have contacted a professional animal trainer to come to the house to train me on what I am doing wrong.
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I am happy to share what I learn, but it may take a while before I can back to you. You will get some great information from the folks here. I have learned so much from them!
Take care and good luck with your little sweetie!
Katheleen