Fatima Abubakar, 16, was set to tie the knot with her fiancé on Thursday.
Her father told the BBC that she was standing very close to the well when the accident happened at her aunt's home on Wednesday, where she was celebrating with friends.
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He said his daughter was excited about the wedding, adding that she and her fiancé were very much in love.
The groom is distraught and could not talk on the phone.
Her father said their would-be wedding guests were now mourning at his home.
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