Demi Lovato’s baby niece dies after sister Madison De La Garza undergoes emergency C-section Page SixDemi Lovato’s Baby Niece Dies Following Emergency C-Section: ‘Grateful I Got to Hold You’ PEOPLEDemi Lovato’s Sister Madison De La Garza Mourns Death of Her First Baby – E! Online E! NEWSDemi Lovato’s sister Madison De La Garza grieves loss of daughter after undergoing ’emergency C-section’ Daily MailMadison De La Garza, Demi Lovato’s Younger Sister, Mourns Loss of Baby Following Emergency C-Section Billboard