Honestly, I could be a terror child for my mom when I was little, and she would frequently take away my blankie.
It made me really insecure and scared, but my mom was the kind that kept taking it away to "teach me a lesson", not caring if it was a security blankie. I KNOW you are NOT like that, don't get me wrong

I was just stating my experience with my blankie! I still have a piece of it in my dresser

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I don't have children, so I can't say much.. but wanted to wish you luck and you sound like a very good mom so I'm sure everything will be ok