Have you ever taken in someone else' child?

We took in our nieces when their (single) mother had to be admitted to the hospital for treatment. When she passed, we obtained full custody of both girls. They were 2 and 5 and are now 3 and 5. The youngest had an easier transition...besides that she had still been breastfeeding (had to be ended when treatment started), which was upsetting to her to abruptly stop, she has been pretty okay...normal sadness, the occasional "Frankie, when Mama comes back, maybe we can...never mind." Miss Frank took it way harsher...more of what we expected...she wanted to go see her mom every second of the day, she wanted to go back to their apartment, etc, but her days were alright...she played with the other kids and did alright...then the passing, and she took it as would be expected. But hopefully that wouldn't be an element if the kids came to stay with you. It was meant to be short term with us, but turned into life long, and it was a big adjustment for them...still is...but they get by and we make sure to keep an open line of communication with them, they can tell us whatever they feel and we give them space when they need it. They're incredibly aware children, which I think will be an advantage in the long run for dealing with all of this as they get older.