I'm sorry you're going through this. My dog Chama does the same thing whenever I bring a new dog into the house. She forgets her manners and starts acting out. She snarls at the new dog, sometimes not even letting them in the same room with her! She snaps at them and is very grumpy overall. But after she realizes that the new dog is not going anywhere and that her life isn't going to change she settles down. She now adores Rafi who she absolutely hated when she first met him. In fact she would scream at him if he even looked at her! This was all because she feared losing status with a new dog in the house and because she wanted the new dog to know she out ranked them. She is not a natural alpha so she has to work extra hard and be extra nasty to let the other dog know this!
What is your reaction when she growls, etc.? Do you yell at her? is she getting corrected a lot more than normal? How do you supervise her with the puppy outside? I'm asking because I wonder if she is feeling insecure because the puppy is causing her problems and getting her into trouble.
I would step up her NILIF at home. Keep it entirely positive. Don't force her to do anything but work on having her do it for a reward (toy, food, whatever). If she is being possessive of toys then remove them until she settles down. Let her have them when she has space to herself. Do exercises with and without the puppy there so she has positive associations both ways. For now I would also allow her some space away from the puppy by putting a gate up so she can have a room to herself.
Have you done clicker training with her? That's a great way to build confidence. You could start with the 101 things to do with a box game and you could work with the puppy on that one too.
She'll come around, just give her time, structure and positive rewards.
What is your reaction when she growls, etc.? Do you yell at her? is she getting corrected a lot more than normal? How do you supervise her with the puppy outside? I'm asking because I wonder if she is feeling insecure because the puppy is causing her problems and getting her into trouble.
I would step up her NILIF at home. Keep it entirely positive. Don't force her to do anything but work on having her do it for a reward (toy, food, whatever). If she is being possessive of toys then remove them until she settles down. Let her have them when she has space to herself. Do exercises with and without the puppy there so she has positive associations both ways. For now I would also allow her some space away from the puppy by putting a gate up so she can have a room to herself.
Have you done clicker training with her? That's a great way to build confidence. You could start with the 101 things to do with a box game and you could work with the puppy on that one too.
She'll come around, just give her time, structure and positive rewards.