Thanks for all the kind words, folks.
How did you do the hair reset thing?
Apologies in advance if some of this makes lousy sense... writing it just before bedtime (and I think my brain is already tucking itself in)
First, search through your packaging; you'll want that clear plastic strip that was around her head when she shipped.
Next, you'll need to strip her down (sorry Amy!) - being careful not to dislodge any of her clothes' buttons/studs that haven't been properly fixed... have a toothpick/cocktail stick and spot of superglue standing by just in case!
Remove the bit of thread from her hair
Futz the hair around to try to lessen her big forehead. I chose to have some her hair falling forward over both shoulders. This can be where it's handy to have Barbie hairbrushes and an anti-static spray (though really just a very light spray of water will help). Anyhow, once you're happy with the hair slip that clear plastic strip back over head. There may be some extra tweaking of hair necessary now but once you're happy, it's time to boil up some water.
NOTE: if you've lost the plastic strip try to make one from a plastic bag or similar... do not use an elastic band because if that is too tight when you pour on the hot water it stands a very good chance of denting the vinyl head!
Sit/kneel your Amy in the sink - I had mind in a plastic jug (obviously nothing glass given the next stage... and even more obviously you don't want to be holding her either in a moment) - and once the water is boiled simply pour it over her head. Obviously, be careful at this stage - it is freshly boiled water after all!
It might not be necessary but I then poured some cold water over her to (i) help set the hair and (ii) to cool the water she was standing in... and to cool any hot water than might have gotten inside of her too - very hot water suddenly seeping out of a joint is never a nice surprise!
If you are wary of doll hair and boiling water you can probably let it cool down a little bit before pouring. Mine suffered no damage though I did once melt the hair on Famous Covers Thor... more down to the steam than the actual water. But lots of dolly hairdressing since and it's never happened again. Anyhoo, back to Pond.
Leaving the plastic strip in place you then wait for her hair to dry (a bit of paper towelling can be used to blot some water off) - it'll take an hour or three, though this coarser stuff dries a little quicker than the usual dolly saran hair. Once dry (or when your patience is at an end) slip the plastic strip off her head and, touchwood, her hair should now be improved.
Yes, I know... but it's a heck of a lot simpler than keeping Hot Toys rubber bodies from rotting
Anyhow, hope some of that might help. Good luck!