Am I wrong?

I feel so badly about it...Am I wrong to dislike my dog?

She is a husky shepherd mix, is 8 years old very very hyper. She gets the proper amount of exercise each day, (2 walks for a half hour, and running her laps around the back yard daily.)

She is very needy. Very. I have talked to my Fiancé about getting her on medication before our baby came but he didn't want to. She has the energy of a puppy, she was let run wild before I came into the picture, extremely spoiled to the point of my Fiancé sharing half his dinner with her and her kicking him out of the bed.

I had been working with her throughout my pregnancy with a trainer to get her to get her to stop jumping when we come home, taught her to use her inside voice, and even had him carry around a baby doll so she'd get used to it and when she'd get too rough we would yell no, dominate (stand over her in our authority position,) and send her to her crate. When she completely lost it we would spank her.

Now. I can barely type this without shaking with fear and rage. My inlaws came over today. They went through the process of introducing themselves to her letting her sniff them and giving her plenty of attention. When she had settled they came and sat down in the living room on the couch.

Our dog was perfectly fine sitting on the floor getting pet and sharing attention she'd lay down, nudge FIL for pets....

After about 10 minutes of loving on our 7 week old baby our 60 pound dog decided to lunge on my mother in law while she was holding my baby.

He is ok. Barely a scratch. He's acting perfectly fine. MIL took the bront of it but if she hadn't blocked him and I hadn't kicked her mid air, my baby would have been seriously hurt if not worse.

MIL has scratches on her arms and legs from her. Her leg is bleeding.

She knew better. We had been strick with her for months before he was born. I feel hatred for her for nearly harming my baby. I can't believe she did that. There was no reason whatsoever. Am I wrong to feel this way? Would you push medication to calm her down now? How would I go about it to a guy who doesn't want her to be on them? I love my dog, but I love my baby's saftey so much more.

EDIT: She does not get one hour of activity a day, her yard rounds are nearly 3 on top of her walks. I don't know where you got that from...

And MIL and FIL both have held baby many times in her presence.

Now, does anyone have an answer to the medical part?