Usually, a child isn't diagnosed with ADD until age 6 at the earliest. Kids can show behaviors like ADD/ADHD up until that point. And many things can be behind the focas problem besides just ADD. She may be immature, she may have a different delay, she may be emotionally distraught with the loss of a parent (it sounds like since you care for her), etc. Anyway, for medication to come into play----- she would have to go through a formal diagnosis which is very important because if she doesn't really have ADD she will still have the behavior but also with all the side effects. Her school system can help with the evaluation and I would wait until they suggest it.
I think it is very admirable for you to look out for your little sister. That is truly a gift to have someone who cares. Try to listen to her teacher and school couselor as they will be good resources for what direction to take.
Also, someone who posts here has some good natural remedies that they may be able to recommend for you to try too. I'm just learning about that so I'll let them help you if you are interested. Good luck---- you are doing a great job.
Thanks for the feedback. I've been keeping in contact with her teacher and she's letting me know how she's doing in school with her attention problems. I think alot has to do with what she has picked up on. Yes, her mother passed away when she was a baby and my dad is pretty busy with his life. My sister is used to watching tv all day and playing computer games, since I moved in I'm trying to make sure she finds other things to do by playing games with her and going over lessons the teacher has asked me to do with her.
I'm hoping being more interactive with her will be a small part of a natural remedy for her attention problems, it sure has helped alot of other different aspects involving her behavior.
It could take time, so if she's the same way in a couple more years I'm going to have a doctor see if they can diagnose if she has ADD or not.
Thanks for your input :)