I have a Collie, not sure on energy levels for huskies, but Jack could run forever if I let him!
Two good long runs if possible are better than the one, so she has good exercise in the morning and then again perhaps in the evening. I know it's not always practicable, and if not, then a run in the yard/garden if you have one in the evening as well might help to tire her. Does she like any particular toys? Balls? Jack would run miles for a ball, so I always take one out with us. I also go to the park, where other dogs are, as that is stimulating for him too.
Mental stimulation is as tiring as physical, so maybe do some fun tricks with her, or some advanced obedience training? Even agility, if her basic obedience is up to scratch.
If she only doesn't come at the end of a walk, it's probably because she realises that when you're putting her on the lead, walkies is over! I had the same problem with Jack.
Try calling her back periodically, and putting her on her lead, praising her and letting her off again. Don't give up on that, it's important that you keep doing it, even when her recall improves. "High value" treats like 'real' food-steak, sausage, cheese, ham, or something you know she loves, might have a better chance of luring her back.
I won't be all patronising, cos I am sure you know how important it is that she comes back to you when she's called. Maybe some sessions at home, without distraction, to strengthen her recall would benefit you both.
Good luck, she sounds lovely!
Lisa x