Brother possibly reincarnated in my daughter

So over the weekend my 9 y/o just casually said to me while I was tucking her into bed about how my late older brother (who she never met) had sent her to me, and how much he missed everyone and to not worry about him. Now I have dealt with depression since he was murdered back in 2013 and I had my daughter in 2015, I think about him almost daily. This freaked me out as I didn’t expect it at all, she was talking in almost a 3rd person pov calling my mother (her grandma) “mom”, and calling her own dad by his real name instead of “dad”. This happened for about 20 mins where I was just listening to her talk and when I tried to ask question she kept telling me to stop and try not too remember what had happened. Has anyone else experienced this? She is back to her normal self like nothing ever happened but it’s left me with so many questions.