I suggest no bed privileges unless invited by you. I've had 2 incidents of growling/snapping with Trolley & both were bed involved. She thought she could take over my space. She was very wrong. Each time that she has tried this I go back to reinforcing NILIF. No bed snuggling unless I initiate it & it's only for a few minutes & then she is off the bed. Works for us & no growls since. Good luck...