pined in thought
Note from Interpretation by H Gardner

This is absurdly supported by some commentators by reference to Nym's 'Patience is a tired nag.' There has been much discussion as to whether Shakespeare had a particular monument in mind. Although none has been discovered to fit the description, I think, in spite of their being far apart in time, we must take both Viola's and Pericles' words as referring to the same conception. Because Viola's sister lost her beauty, we need not take it that Shakespeare means us to think of the virtue which she exemplifies as pale and worn. She is like Patience on a monument in that she 'smiles at grief'.