You should go to that court and ask to conference the case. You should easily be able to get it dismissed by showing a copy of your license.
Feel free to call me if you have any further questions.
As to the addendum, normally if you want to fight a case, you have to appear in the court. You could call the court to see if there is another way, such as sending a copy of your license along with proof that it is currently valid and a sworn affidavit from yourself that you do have a license. But they can insist that you appear if you want to contest the charge. If you fail to appear, your license may then be suspended.
You could hire an attorney who might or might not be able to fight the case without you personally appearing. This might cost more than the fine.
The cost to you to fight the case, between gas and time off, may be nearly as much (or more) than simply paying the fine. It's your call how much it matters to you.
Please do not post further information on this public forum. Anything posted could potentially be used against the person you are trying to help.
DISCLAIMER: This answer to a short simplified question is provided solely for general informational purposes only and is not intended to provide the specific legal advice you might need to decide your future actions. It is intended to provide you, and others with similar issues, a general, common-sense idea of the situation. Please consult with a local attorney to evaluate your particular case in the depth it deserves. This answer does not constitute legal advice, create an attorney-client relationship, or constitute attorney advertising.
on first appearance in court the proof of the valid drivers licens should properly lead to a dismissal on first appearance, to ensure this happens have a copy of a DMV abstract showing any suspensions/ revocations and reinstatements of your drivers license as further proof that at the time of the incident you did have a valid drivers license with no suspensions or revocations