Hi! Welcome to the forum!
Definitely keep a collar on her at all times. This way she will get used to it.
This is the type of collars I use on my dogs: https://www.premier.com/store/Produc...x?cid=1&pid=11
This is a great house collar and walking collar as the dogs can't back out of it and will be loose when they are hanging out or walking well.
Put her on a leash and hang on! Don't let her bump into things as she will get hurt and will associate that with the collar and leash. Take her out to the middle of the backyard, put her on the leash, give it just a little pull and call her to you. This will start up the fight she gave you before. Just hang on and let her get over it. DON'T give into her or you'll never get her leash broke. Stand your ground, don't say anything to her. When she gets tired she'll stop. Once she stops, call her to you and if she comes to you, give her praise and start to walk around the yard. Everytime she fights you, stand your ground and let her get over it. And repeat. After she is walking around with you, give her lots of praise. Keep walking her around.
When she is over this, then take her and one of your other dogs for a walk. She will follow them. Then you can keep talking to her in a calm voice and tell her she is a good girl. Do this every day. Twice a day if you can.
Just be patient. Once she is walking on a leash, take her to Obedience classes. Make things fun for her.
Good luck! Let us know how it turns out!