My cousins lived with us for a while and we thought that was fun because it’s like a sleepover every day. One time, our mom even took us out of school to pick them up. I learned later that it was because child protective services took my cousins away from their mom because of mental health issues.
My mom offered to take her sister’s kids until she got her mental health back in order. My cousins live with their mom now and their mom is in a much better condition mentally.