Cracking a toddlers back?

Kal

My 17m old has discovered my foam roller that I use to stretch my back throughout the day. She is in the stage of copying everything I do, so of course she wanted to lay on it. I figured there was no harm in letting her use it to stretch out. She even pushed with her feet and was able to roll herself on it and all of a sudden i hear a few loud cracks, she sat up and laughed and was smiling and carrying on like nothing happened. My question is, can this cause harm to her spine? If she’s giggling about it, would it be ok to let her continue to do it if she wanted to? Or should I just hide it from now on? I know toddlers can get adjusted at a chiro but I’m a little weary on her cracking her own back.

I love a good back crack but she’s just so small and I’m a FTM I am such a paranoid mess about everything haha!