Did you get help from anyone? If not, post a photo so we can see how long her ears are and maybe I can put together some posts along with tape and mail to you. You can pm me your mailing address. I don't think it's too late to post her ears. Here is a link to the tape I purchase. Also, if you go to a local hardware store, they should have the 3/8" or 1/2" insulation/backer rod. Or, you could use the cardboard off the hangers from a local cleaners, you could use Tampax, or even tightly rolled paper towels.
Don't worry. Do it a couple of times, you'll probably screw up just like we all did. Don't get frustrated but keep redoing it. Post here if you have problems.
I give my pup good treats when we are doing ears. Sometimes I have to practically sit on her but we get it. Other times if she is laying on the sofa and slightly tuckered, I will post while she is drowsy. Believe it or not we get the rods in evenly like that as well.
Will your vet show you one time how to post?
Amazon.com: Zonas Porous Tape 1 inch 12pk: Pet Supplies