Okay, I'm going to try and do this without sounding condescending or like I'm talking down to you.
First and foremost... you're 15. You're a kid. Get used to it. I'm 21, and people still call me kid, so I don't mean "kid" as any sort of insult or disparagement. I just mean that you're young. Enjoy "kid" stuff like hanging out with your friends, going to high school sports games, going to concerts, stealing a kiss from the girl you have a crush on, because soon enough you'll be an adult and you'll want those days back, but they'll be gone forever. Focus on doing well in school and on being a kid for now. There will be plenty of time for you to have a career in EMS once you're an adult.
As for the ambulance driver being an insult to paramedics thing...
Yes, it is frustrating. The general public has no idea what we do, or how we do it, or why we do it. All they know about us is that they call 911, we show up, and we take them to the hospital. That's all they know. They don't know the difference between an EMT and a paramedic, or the difference between an MICU and a regular ambulance, or BLS or ALS, or what ACLS, PHTLS, PALS, PEPP, EMT-I, NREMT-P, NREMT-B, CCEMT-P, or any of that crap stands for. All they know is that they call, we haul. So naturally, all they think of is the driving aspect because all they think of is the transport. Ergo, the term "ambulance driver". It's merely due to ignorance, and they are ignorant because we haven't bothered to educate them on who we are, what we are, and what we do. Even fellow healthcare professionals can be ignorant as to exactly what it is we do. So if somebody calls you or your role model an "ambulance driver", just let it go. Don't be disrespectful. Because it's not disrespect, it's a lack of knowledge.
Now, if I may repeat myself... you're a kid. There is no, and I mean NO reason you should be popping off at the mouth to a CNA. Sure CNAs change bed pans, but they still have more education in the nail of their pinky finger than you, as a lay rescuer, have in your entire body, even if there were two of you. She is a medical professional, you're a child with a hobby, and there is no excuse for it except for cockiness on your part.
Also, EMS is a profession, not a family. The people I work with, I may consider them friends and enjoy talking to them and working with them, but that doesn't make us family. There are providers that I can't stand as human beings, but I should consider them family just because we share a profession? This whole "family" nonsense that has overtaken EMS in certain areas needs to stop... it's a relic of EMS's early association with the Fire Service, and it needs to stop. Doctors don't consider other doctors their family, nurses don't consider other nurses their family, what makes us any different?
In summary, be humble, do things the right way, don't grow up too fast, be respectful and understanding, and when your day to be a paramedic comes, you will already have a good base as humility, respect, and understanding are qualities every paramedic should possess. You sound like you're enthusiastic and want to be active. Maintain that attitude and preach it to others. Just don't rush in to anything, and don't worry about getting those nine magic letters on your shoulder as soon as you can... worry about earning them and truly deserving to wear them.