Ron - how old is your dog? Why did you start using the remote-collar, was your dog lunging/reactive to other dogs? Are you completely off-lead using this method?
I'm glad you see that you likely cause additional training challenges for you and your dog, by giving her a stim, causing her to negatively associate the receipt of this, being caused by her being around other dogs.
I'd get back on the 6' leash and martingale collar, work on attention and heeling exercises, without any dogs - for a long period of time - positive only - mark and reward based training. A happy, upbeat "Good" and a tasty treat for offering attention and walking on loose lead.....
After she can do that 'on command' - take her to a park where she might 'see' other dogs in the distance, but not encounter them in close proximity. Again - call for attention and loose lead walking - mark/reward/release.....rinse and repeat....over and over and over. You can add 'sit/stay' to this exercise as well.
After she can do that on command with 100% reliability - take her near a park where she will be closer to dogs, but not have any direct access. Use the mark/reward/release....Repeat...over and over....
Then find someone with a well behaved dog, who can walk toward you - with both dogs on lead - as you pass one another, call for attention, even a 'leave it' might be needed initially - mark and reward good behavior. Continue approaching and passing one another until your gal has decided 'this dog' is a non-event......you'll likely have to work at this reconditioning of her behavior for a while - depending on how old she is and how long she has been associating a negative stim with 'seeing/being' around other dogs. Each new dog presents a new and different smell/energy, etc...
If you have someone who has a dog she does well with - I would suggest arranging a meeting, on-lead, where you two walk to a place separately, with your dogs, and allow the two dogs to meet, with control, on lead. Have this be a SET UP FOR SUCCESS meeting, where as soon as the dogs meet and it goes well, you mark and reward, then leave with your gal - so she associates that good things happen when she exercises emotional control around other dogs. Slowly - over time - with consistent and fair training, you should see her look to you around other dogs - seeking your direction - your approval and HER reward
Stay the course - you'll overcome this - it will just take time and patience on your part.....and good luck - thankfully our dogs are very forgiving of us and go on to learn proper behavior, once we learn how to teach it
