Hi Deb...have PM'd you. Sorry I missed your original thread when you were most in need of help :(
You don't have to take all her toys away - just the ones you see her getting 'attached' to. Rotate the toys too so she doesn't get the chance to begin 'guarding' them. I once took my slipper off and gave it to my girl as a 'temporary' distraction and then retrieved it before I could see a point of no return ;) Husbands' smelly socks worked for a bit too !

Some gentle training sessions on a little and often basis can help with the distractions too. Hiding kibble taken from her daily allowance inside an upturned paper cup etc.
The tip 'sitting in the park' watching the world go by is a good one too! As has also already been said. You seem pretty clued up - you've had her checked at the vets twice - so I would just let nature takes its course and continue trusting your own judgement on her progress.
You're a worried 'mum' doing the best for your girl and she'll be fine as I'm sure the post OP appointment tomorrow will indicate ;)
Take care
Jo
ps Her 'boobs' will reduce afterwards, but not to the extent they were pre phantom and... 'natural puberty' as you correctly pointed out ;)