Glad Pebbles is feeling more lively this morning.
Mine have often had to wear lampshades and some adapted better than others. I did trim one lampshade so it prevented the cat getting at the wound but made it much easier for him to eat and drink... and also to use a litter tray.
Are you letting Pebbles outside with the lampshade in place? The reason I ask is if they roam wearing it, it makes them very vulnerable.
One of mine made a dash for freedom while wearing a lampshade and I couldn't find him - we have a very open, overgrown in parts, garden. After an hour or so, I found him stuck (his collar had got jammed) under a plank of wood (which was overgrown with weeds) and he'd also managed to get his paw through the bottom of the l-shade. In effect, he was three-legged with limited vision and hearing quite apart from being stuck.
If your cat can't get out of the garden, that's fine but if she could make a run for it, wearing the lampshade she could find herself in trouble.