(NEWS.com.au) — A 2-year-old girl may have survived on chocolate Easter eggs for up to five days after her mother died in southern NSW.

The dehydrated two-year-old was discovered by local priest who helped a concerned neighbour gain access to the house in Ashmont, near Wagga Wagga, on Friday afternoon.

The body of the 36-year-old mother was also inside the home.

Ambulance officers treated the girl and she was taken to Wagga Wagga Base Hospital in a serious condition.

The toddler may have been alone in the house for up to five days before neighbours alerted police.

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