What kind of recall training are you doing? What do you do if she fails her recall?
In any case here is how Id train recall.
First don't feed her for a day. The dog can easily go this long without food. Take away her bowl too she doesn't eat from that anymore for now. From here on out she gets fed during recall training only. You will probably feel sorry for the dog. That's ok. Don't give in though.
Now some rules for you to start. Never recall your dog away from something fun while she is learning the recall. Never recall your dog to put her away in her crate. Never recall your dog to you to put her on her leash. Never recall your dog to bring her back inside. Try to avoid any situation at first where you aren't 100% she will come when recalled. This is to start off with ofc this wont be permanent. You want to start off with the dog building motivation to come and in order to do this you want it associated with positive things only, not the ending of something positive. Just walk over calmly and get your dog if you need to get your dog and it meets any of the criteria above.
After 24 hours of not eating she will be very hungry and very interested in learning how to get her next meal since it doesn't magically appear in her bowl everyday like usual. To start you go somewhere with minimal distraction or no distractions at all. Use a flexilead or a long line leash to keep the dog from running away. Have a friend or family member hold the dog in place. Go up to the dog with treat or food in hand and wave it under her nose and then take off running away from her. Look back and when she is going nuts trying to chase you call her name and then use your recall command (make sure you are still running when you do this because it will stack three drives her prey drive as well as her desire to eat and be with you). At that moment have your partner release the dog. When it is clear the dog is heading for you say yes! or click if youre a clicker person and give the dog some food. Repeat this several times running in different directions and distances before you give the recall command. Do this several times a day and different times of day. Each session will last between 2 and 10 minutes. Do not continue this until the dog is full, leave the dog wanting more, but make sure your dog is getting plenty to eat throughout the day. If at any time the dog fails to recall do not do anymore exercises with the dog for the rest of the day and do not feed the dog anymore that day. If the dog doesn't come the dog doesn't eat. She will get the point very quickly.
After 3-5 days of this your dog will have it down and is ready for the next step. Recalling away from something somewhat interesting. Again use your partner in crime. This time you will have your dog on a long line or flexilead at a distance. The dog will be with your partner being teased with a treat of less or equal value to the treat you will be using to reward the dog when it comes to you. Your partner will tease the dog with the food but as soon as you give the recall command your partner will cover the food and look away, ignoring the dog. Your dog should immediately peel off and come running for you and when she does you say YES! or click and then give her what you have. If your dog immediately peels off after you give the food and goes to your partner that's fine just restart the exercise. Your dog will get very good at this exercise very quickly. Continue to do this several times a day and several repetitions. After a few days of this when you feel the dog has it down at this point you can continue to do exercise 1 and 2 but this time in different places. Do it in the front yard the back yard inside and if you can find a relatively quiet field or low distraction strange environment do it here too to help the dog generalize the command. The recall command means come everywhere. It should be practiced till it is reflexive.
Try taking the dog on a long leash walk where the dog is allowed to pull way ahead or lag way behind and as soon as she finds something engrossingly interesting like a strange smell give the recall command and treat appropriately. Just be careful not to make it too much of a distraction too fast like a squirrel a fence with another dog behind it.
Eventually you can start stepping up the difficulty of the exercises. Have the dog recall away from chasing a person running with a treat or a toy. Make sure the person stops when you give the recall command at first so that the dog has an increased chance of being successful. We don't want the dog starving we just want her properly motivated for the task at hand. Eventually the person will be able to continue running and the dog will just peel off and come back for her reward.
As the dog gets older you can transition from food reward to tug or toy reward instead and she can have her bowl back.