This seems odd. It's possible that the pinhole and the "broken" skin are the beginnings of decomposition, although it's eyes seem too in tact.... Were there any other creatures in the vivarium? And can you give more specifics (i.e. temperature, humidity, lighting, tank size and height, age of frog, substrate, water source, last time water was cleaned, food and vitamins, and anything else that may be useful) Do you know the last time she ate? Did you notice a foul smell or other oddities in the vivarium?

I'll do my best to answer your question with further info. Sorry for your loss