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What model & how many doors Civic do you have (ex. 4DR LX)? Is there an after market alarm or the factory alarm installed on the vehicle? Please let me know so I can further assist you. Thank you.
The remote pad does it say Honda or something else? If it is a factory Honda remote try this from the owner's manual. Here it is:
It will be page 229 or page 223. It has instructions as to what to do if car alarm starts to sound. Has the factory stereo been removed?
If it is not a factory alarm, there should be a valet switch mounted somewhere under the dash to disable the alarm & able to start it up. Please let me know. Thank you.
No you do not have to pay more, unless you would like to pay a bonus, but it is not required.
If she can not get the car started , I would recommend calling AAA if you have them & have the vehicle towed to the dealership. They would be able to properly check the battery & anything else that may be possibly causing the problem. I believe more car's are now coming with an accessory plug that is on all the time. You definitely have to be careful with that. If you have any other questions, please feel free to contact me again. Thank you.
Hopefully the dealer will cover the warranty for a new battery I hope. Glad to of helped! Have a great rest of the week. Thank you.