Hi and Welcome to Bernertalk! First of all congrats on you new Baby!
I had to laugh when I read your post. Berners are really smart, and learn very fast, but they are Stubborn

! You have to have lots and lots or patience. Riley does the same thing when you point at him. He started it as a puppy and at almost 4 years, he still thinks the "pointing finger" is a big game. He could be asleep across the room and without saying a word, my husband or I can point a finger at him, and somehow he knows and will start "talking back"

. It is so funny! It is probably more funny to us, since we aren't trying to "train" right now like you are. I wonder how many other Berners play that game?
Like I said, just have patience and be repetitious with everything that you are trying to teach her. Riley used me for a chew toy also for a long time. My arms and hands looked awful! A lot of that was my fault for not making him stop ( he was just so cute ) I ended up using something called apple bitters, apparently tastes really bad, and I would spray it on my arms before I played with him. He eventually stopped. Just hang in there, it will get better, and it will be worth it! Berners are amazing dogs!
We look forward to hearing from you and would love to see some pictures..