TV Round Up: Questions I have about Grimm's first season finale

I finally finished watching the first season of Grimm, I watched the last two episodes yesterday. I thought the finale episode Woman in Black was really good but now I have questions which I hope will be answered in the second season.

And here are my questions:

1. What did Adalind Schade's give to her cat because when it scratched Dr. Juliette Silverton it did something to her? Since Grimm and Police Detective Nicholas "Nick" Burkhardt caused Adalind to lose her powers is she simply out for revenge against him by going after his girlfriend Juliette? Or is it for some other reason? After Juliette passed out Nick took her to the hospital where she was being kept for observation. But near the end of the episode, she opened her eyes and they were all black. So, I was wondering what did Adalind do to her?

2. Whatever she did to Juliette is it going to turn her into a monster or something else?

3. Also, is it something that Rosalee Calvert can find a cure for?

4. Is the lady (who I figure is a Grimm) with the red hair really Nick's mother? Since he was 12 years old, Nick believed his parents were dead and he had been raised by his Aunt Marie. But in the 20th episode Happily Ever Aftermath he found out that they had been murdered. So, if that lady is his mother why now did she choose to reveal that she was alive? And why is she really there? Because it can't be for old times' sake and getting to know her adult son. I also wonder if his father is alive too?

5. Will Police Detective Hank Griffin finally learn the truth of the supernatural world? Throughout this first season Hank has unknowingly been caught up in it, from being controlled by Billy Capra to Adalind using a potion on him to now seeing a transformed Monroe (although he didn't know it was Monroe) out in the woods to seeing Psychiatrist Constantine Brinkerhof transform back to human after he died. In the finale, Hank was starting to unravel because although he doesn't understand some of the things he has seen he does know he's seen something.

I'm really looking forward to starting the second season because with the way the first season ended, I have to know what happens next. Anyone else new to watching Grimm? This is quickly becoming one of my favorite shows.