awww.....She's still so young. It takes a long time for them to grow out of the puppy stages & then we have to continue watching them closely when they have more room to roam. Bella went through this stage & chewed corners of kitchen cabinets.
Good news is that she did outgrow it. I would confine her until she learns & it's for her own safety too. Keep her occupied with chew toys during her teething stage.