How to break bad news to my daughter

So I recently had to cut ties with my mother and her husband, they’re toxic people who unfortunately felt like they could treat my husband and I like shit with no repercussions. I had sent a text explaining our reason for distancing ourselves from them and then blocked their numbers so as to not have to deal with hateful messages.

I’ve avoided saying anything to our 7 year old daughter but we just returned from a trip and found that they had boxed all of her stuff up from their house and left it on our doorstep. I’m now in an awkward situation because I have to find a truthful but gentle way of telling her that we will no longer be seeing her grandparents.

Unfortunately they had a pretty strong bond with our daughter so this has been a hard decision for us to make.

I would be so grateful to get some advice on how to break the news to her, please. ❤️