Is she rumbling on vibrating like a little phone? theres a difference between the two. If its rumbling then she probably just doesnt want to be touched where your stroking and shes being a bit of a grump! If she's vibrating then she's probably a bit scared, hold her gently but firmly, maybe let her sit on you chest and support her bum and only stroke her head until she feels a bit safer. Ive only had one of mine vibrate and she only did it when she was a baby and she hated voices, they scared the life out of her :smitten: