Books about death for toddlers and young children

Hi!

My toddler is very fortunate to have had a good relationship with her great grandmother, unfortunately she has recently passed away and I’m looking for books to help her understand.

My daughter is young (2) but the social worker (from the nicu) we are still in contact with has said it’s best be upfront with them and not to try to hide what is happening - social worker has said this can impact them negatively and cause death anxiety.

Additionally, she’s starting to ask pictures about my dad and I want to be honest with her about what happened to him as well so if there are any books that mention different types of death that would be helpful.

I did try looking but got easily overwhelmed when all I was seeing was religious books as we aren’t religious and that wouldn’t have a positive impact.