Update and Opinion Needed

It's been a while since I've posted so I thought I would provide some updates. The transition with the 11 yr old female, N, is going well, but slower than I would like. We did about 4 onground visits in July and August, an overnight visit at a local hotel in August, and this past weekend was her second weekend home. She is slated for discharge in December, but the therapist said that may be moved up if she does okay. I hope that it is. N is ready to come home and seems to be somewhat frustrated when we have to take her back each weekend. And, on what seems to be a selfish note, the drive is killing me. It's 5 hrs one way - which means 10 hrs of driving on Friday for pickup and 10 hrs of driving on Sunday (or in last weekend's case, Monday) for return. The therapist wants to take this weekend off and not have a home visit. I'm not exactly sure why, but I'm so exhausted at this point that I'm not all that disappointed. I did find out that, although she is not available for adoption, I will become her legal guardian which is close to the same thing. So she will be a keeper. She seems to be a very good, perfect (if there is such a thing) fit to our family. Now, for the opinion needed: Behaviors N is capable of larger behaviors and tends to react impulsively and not think before she reacts. I know that about a month ago this resulted in her throwing a water bottle and almost hitting someone with it. She didn't throw it AT the peer, but it did almost hit them. Then she apparently threw a chair. N does have just a couple of what I consider small behaviors in comparision to this that I would like to work on - cursing and how she acts in public. She doesn't act really bad in public, but she does carry on a bit. I do think this will settle down as we go on because when we remind her that she's out in public and to settle down a little, she does. She does not curse around us a lot, but I do know she was cursing outside the other day around the neighbor's children. When she told me, I did not react in a large way simply because I do consider that a milder behavior that what she can have and something we can work on. I basically explained to her that it's not a good thing to do and my mother explained later that we do not curse in this house. Also, I gave her an incentive to stop by telling her that if she continued to do that around the neighbor's children and the neighbors found out, they probably wouldn't let their kids play with her. I could have reacted by sending her inside for a while and not taking her to the carnival later that day, but I thought that was overkill at this point. In your honest opinions, did I react properly or do I need to go in with a stricter front to begin with? This is really my first experience with a slightly older child.