She was born in Washington DC in 1939, to the late Wallace and Miriam Macnicholl. Nikki was preceded in death by her husband, Daniel Riggins.
She is survived by her two daughters, Lynn Brown (Allen); and Kelly Knight (Richard); six grandchildren, Lori Kelly (Danny); Sheri King (Jeremy); Jami DeMarco; Charlie Knight (Lindsay); Andrew Knight; and Owen Knight; and six great-grandchildren, Keri King; Kyli King; Kati King; Asher DeMarco; Bailey DeMarco; and Cameron DeMarco.
A memorial service will be held at Ridout's Southern Heritage Funeral Home on Thursday, June 30, 2022, at 1:00 pm.