Sorry, I'm at work right now, I'll try to make screenshots this night - but the glimmer you mentioned is correct for this spell.
Have you got "know creature" level 5? If so, please, tell me how low her spir. resistance is after you cursed her and which polymorph spell lvl you use. And I would really love to have your save - I'm very curious what could've gone wrong. I promise, I just want to test it.

If it is not too much trouble: Zip or rar your Josie save and send it to
kiya1@t-online.de

you don't have to split your mail - Please? <img src="/ubbthreads/images/graemlins/puppyeyes.gif" alt="" />

I never had probs with that combo - so I'm really very curious - and I simply adore to poly her <img src="/ubbthreads/images/graemlins/biggrin.gif" alt="" />

Have you tried Raze's tip: About drinking a shadow potion and sneaking up to her then?