This is probably a quite unique situation, so I’m leaving out/changing inessential details and will request that it is taken down at some point.
I am one of several siblings, all now middle aged and with kids. My brother moved to a different country (long haul flight distance away), got married and had a child there; the rest of us stayed in our home country, all living in/near the area we grew up in.
Sadly my brother died when his child was quite young - however, thanks to her mother, we have maintained a really close relationship with his daughter, and she generally visits us for several weeks every summer and has spent several Christmases with us. She’s now a young teenager and is very close to several of her cousins who are of similar ages to her.
We have recently found out that her mother has been diagnosed with a terminal illness. This has obviously come as a huge shock to us. Unfortunately, her mother doesn’t have any living parents/siblings, meaning that her daughter won’t have any family in her country once her mother passes away. Her mother does however have some very close friends who would be happy to have my niece live with them - this would mean my niece could stay at her current school and with her circle of friends.
This is obviously amazing, but me and my siblings are anxious to let her know that she will always have a home and a family with us, while at the same time not pressuring her to move to a different country at a time when she probably needs as much stability as possible. That we would love to have her with us but will not be hurt or offended in any way if she chooses to stay in her country with friends.
Should we write a letter to tell her this signed by all her aunts and uncles (and maybe cousins?)? Or is it a message best expressed in person? Or should we just trust that she knows how important she is to us?