In regards to puppy biting, have you given Puppy biting! a read? I highly recommend sitting down and reading it. Remember, she's teething and chewing helps relieve the pain. Unfortunately, or perhaps, fortunately (depending on the way you look at it), puppy biting just comes with the package. Provide lots of chew toys. Ice cubes and frozen, wet wound up rags are also good. A frozen Kong gives you a welcome break.
When it comes to potty training, it's really a matter of patience, praise and consistency. When Bobby was a puppy, I took him out every five minutes to begin with because he never gave any warning signs. He would just pee. When he peed outside, I would praise as if I had just won the lottery and whilst doing so, I would say "Good pee! Good pee!" You'll sound like an absolute lunatic to your neighbours but hey, it works! As he got older, I would extend the time between breaks. Eventually, he got the idea that when he needed to pee/poop, all he had to do was head to the backyard door and I'd open the door for him.
Puppies have the attention span of a gnat. It's hard to believe but sometimes they forget they need to pee! The outside world is an exciting place and sometimes, even now on walks, Bobby would pee and walk to something that caught his interest. He was a walking pee-er. Once they come inside, they "remember" that they need to pee and since they can't hold it, they just go. When they pee inside, you can interrupt them with a loud noise and quickly take them out. Don't make a big fuss out of it, don't rub their nose in it.
Another good idea, if you haven't already done so, is to tether her. Keep her on a leash so you know where she is and what she is up to at all times. If she gets rowdy with your kid, take her away. If she's chewing something inappropriate, redirect her.