I responded before as to how very sorry i am for your loss.
I agree though, something doesn't add up. I don't think the groomer hurt her intentionally. I,m wondering if she fell off the grooming table on to a hard floor? We can all speculate, but for piece of mind, i think you MUST find out what happened or you will never have closure. My thoughts and prayers are with you.
Please keep us posted. Thank you and God Bless you and your family. RIP Pebbles.