A Halti collar which is used to deter pulling is the one that doesn't fit her nose .
A Halter is what you should be using on your type of dog , because they are bred to be flat faced and often have breathing problems you shouldnt use a collar that just goes around its neck . A halter goes around the body and you hook the lead on to the top , this way you can have gentle control , without throttling your dog . Go to pets at home or other pet shop and ask for advice / try one on the dog
Maybe go to some group dog obedience classes , they are not just for puppies and a great way to meet people in your new area you could go for a walk and a cuppa with !