There are many threads on the site about potty training - you may want to do a search (up at the top) and see what you find.
The older dog is most likely trying to show dominance with the pup. By urinating everywhere, she's marking her territory to show the pup she's the boss. When they're snapping and biting, the puppy is most likely just trying to play with her but she's probably trying to remain "top dog" in the house. I don't think they'll hurt each other; some "play" between dogs trying to gain dominance looks pretty fierce but it's just the way that game is played.
What you CAN do is find a moment where the older dog is getting along with the pup and pop her a small treat. Ignore any "bad" behavior and she'll learn that she doesn't get attention for misbehaving but she gets treats for being nice.
You might also consider confining the puppy in a crate or in the bathroom a few times a day and letting the older dog have free run. That may send the message that she's still #1 while letting her have the opportunity to check out the pup without the risk of being nipped.
The older dog is most likely trying to show dominance with the pup. By urinating everywhere, she's marking her territory to show the pup she's the boss. When they're snapping and biting, the puppy is most likely just trying to play with her but she's probably trying to remain "top dog" in the house. I don't think they'll hurt each other; some "play" between dogs trying to gain dominance looks pretty fierce but it's just the way that game is played.
What you CAN do is find a moment where the older dog is getting along with the pup and pop her a small treat. Ignore any "bad" behavior and she'll learn that she doesn't get attention for misbehaving but she gets treats for being nice.
You might also consider confining the puppy in a crate or in the bathroom a few times a day and letting the older dog have free run. That may send the message that she's still #1 while letting her have the opportunity to check out the pup without the risk of being nipped.