Hi Sumbear chewing is normal behaviour for a dog, they need to keep their teeth in good condition and jaws exercises and supple in order to obtain food should the need arise, punishing a dog for natural behaviour is unfair, instead provide a substitute activity . If your dog is a puppy she will need to chew as part of the teething process. Dogs also chew because they are not receiving sufficient exercise and mental stimulation.

Saying no when you find things chewed means nothing to your dog, she will be aware you were displeased with her but won't know why unless you express displeasure when you catch her in the act. I notice you say your dog missed her walk so on this occasion the chewing could have been a displacement activity because your dog was bored.

As the others have suggested a kong (filled with food taken from the daily food allowance then frozen) makes an excellent diversion from chewing other things.

The large 'Nylabones'impregnated with a beef smell are good too as are the puzzle balls that let a small piece of kibble out at a time