I had this really freaky dream about my niece falling from a verandah to her death.

We were playing at my sister's house (my niece's mum) and then we were away to go somewhere so I went into another room to get ready and I suddenly heard my niece screaming for help from her mum and then silence.
I looked all over the house for and even screamed her name.
I woke up with a jolt and instantly knew what had happened - she had fallen from the verandah.

This dream has me rattled and I'm constantly worried about my niece, albeit she is nine and so isn't dumb enough to fall from a verandah, but I've had similar dreams in the past that would have came true, if it hadn't been for my prevention. Does anyone think this dream was precognitive?

Anyway, I told my sister's fiance to keep my niece and her brother and sister away from the verandah just to be on the safe side, but I'm still terrified in case something like it happens.