iranian prison says she is happy to be back but only feels 1/3 free. >> and that's because her fiance and her friend are still being held in iran accused of being american spies. and shourd is appealing to the iranian government for their release. cnn's susan candiotti is following developments for us this morning. >> sarah shourd is back in the united states, but her home coming is bittersweet. clutching her own mother's hand and staying close to the mothers of her two companions left behind, the freed american hiker called their arrest a big misunderstanding. >> we committed no crime and we are not spies. we in no way intended any harm to the iranian government or its people. if we were, indeed, near the iran/iraq border, that border was entirely unmarked and indistinguishable. >> reporter: iran's president ahmadinejad is in new york for the united nations assembly.