Geee, I missed this first time around, oops!
Did you take her to a vet for a wellness check up? Highly recommended anytime you get a new dog, be it from a shelter, a rescue, a breeder, or even a craigslist post.

I have my foster bichon Willy in obedience classes just now, and we have one Lab/Pit mix in there. He is a big, oversized goofball, he hee, typical puppy, but big, so his paws are everywhere! Seems like he is going to be our clown (every class has one!). His mom does use a halter to help her control him. He is smart, catching on fast. Only thing is: we are advised not to feed our dogs prior to class; SHE has been told, FEED him! He just drags her around the room otherwise, trying to get everyone's training treats!

He is very lovable, and lots of fun.

Even though your dog knows some basic commands, you may want to take some classes. In one hour the dog doesn't learn YOU learn, how to control your dog, how to communicate with your dog. An experienced trainer can point out to you what body language your dog does, so you know what to watch for, when to say "OK, go see friend," and when to tighten up your leash hold. You haven't mentioned if you have any prior dog experience; so just a thought.

I much prefer the APDT trainers, they use positive reinforcement. APDT - American Pet Dog Trainers. The web site has a place where you can put in your zip code and it gives you trainers in your area.

I also suggest folks read this book: The Other End of the Leash, by Patricia McConnell Great info in there!

Now get moving sharing photos with us! Oh and hey, you didn't tell us her name!!