Teething is the likely cause...
Is this while she is alone, or while you are there?
If it's while you are there, try giving her some damp frozen flannels to chew on (these are very soothing) or something really crunchy (a bit of paddywack or similar) - there are times now that Honey just gets an urge to chew and will look for something suitable to crunch!!!
If it's while you are out, there's really no point in telling her off, as she won't know why you are cross - dog's don't know that they have done wrong, they only know that you are cross, and they won't make the connection between the thing they chewed even 2 minutes ago you being cross, they'll only learn that you are unpredicatable...
If it is while you are out, have you considered crate training her? This would mean that she couldn't get to anything to damage...
Honey was fairly destructive from about 7 months through till 15 months or so... we just made sure she didn't have access to anything that was important!!!
Also, you say she can't be bored, as she is walked and has company, but do you do any training with her?? Mental stimulation (training, games etc) is very important and can help reduce destructive behaviour....