My situation was quite uncommon because, as I said, I was already a teenager. It happened rather suddenly - my mum had passed away, and my father couldn't care for my brother and me anymore, so we were placed into foster care. That didn't work out for my brother, thankfully my Aunt stepped in and adopted me, but my brother went to live with our Grandma. It was hard because we were very close.
When I moved in with my aunt, she made it clear that it was a temporary situation until she could sort out official adoption - which as a thirteen-year-old, you feel like a pretty big deal. I think that's why it felt so unusual to me; the weight of knowing this might not be permanent. Official adoption day was a great day, but also hard because my brother didn't get the same chance.
It definitely presented some challenges - I had a lot of anger issues and was struggling to come to terms with my mum's death, which didn't make things easy for my Aunt. She was patient though, god loves her. Looking back, it's incredible how much patience and understanding she had, especially considering the circumstances were so unusual. Most adoptions are different - planned, thought out, and not in the midst of a family crisis.
It gave me a very unique perspective on family dynamics, and I'm actually really grateful for the experience, unusual as it was.