Well she has a sporting dog look to her, which means that she is a hunter. Cats are after all prey. You don't have a kitten, which is good, kittens sometimes aren't smart enough to know how to outwit a dog. I would buy a choke collar first off. I hate what they call them, but they are good for control. I would be sure to take the dog for a 35 minute walk at least before the meeting, go somewhere safe and put her through her commands (have treats with you) Play ball with her, then bring her home.
Put her on a stay and down command. Have the choke chain and lead on, and someone holding the other end. Go and get the cat, bring it into the room NOT up to the dog. The minute the cat sees the dog, the person who is holding the cat is going to get scratched or bit, so be very careful. Carry the kitty correctly, but scruff the neck lightly. Put the cat on the floor FAR away from the dog, step back and be very quiet. Keep the dog quiet, no whining, no getting up.
Then it varies, some cats spit and hiss, and take off. Others just walk over and attack the dog, some walk near the dog checking it out. You CANNOT control your cat, your focus should be on controlling the dog. Have her stay as quiet as possible, keep your voices low, your emotions down. Don't get all excited, this can work out. I use a big cage when I introduce my shepherd to another cat. It's a process developed over time and it works. The other day we had an insurance man here. Our dog was behind the screened room of our front hallway (the insurance man dislikes big dogs) Prowler, our latest rescued kitty was running around the table we were trying to do business on, being the pill that kitties can be. I scooped up Prowler, opened the screened door, and placed her beside Kenai. The insurance man was amazed this german shepherd didn't eat this kitten for lunch! LOL
It can be done, but again, you have to have the respect of your dog, your dog has to be obedience trained, and long walks help because it allows the dog to work off excess energy that would normally go into hurting the cat- whether intentionally or unintentionally- The key to this is controlling the dog. The cat (unless declawed or a small kitten) can take care of himself.
One more thing, if on your "walk" you dog does not stay calm and at the heeled position or pulls you along the sidewalk, I would put her back into a refresher course of obedience with other dogs before the introduction to the cat.