Death Records Now

DEATH RECORDS…SOMEONE PLEASE HELP?
WE WENT TO A CEMETERY YESTERDAY, AND THERE WAS A GRAVE, THAT CAUGHT MY INTEREST, I HAVE LOOKED ONLINE, GONE TO THE CITY RECORD AND I CAN NOT FIND ANYTHING, ON THESE TWO LITTLE KIDS. iF ANYONE HAS A FREE SITE OR SOME THING THEY KNOW OF CAN YOU PLZ LET ME KNOW. HERE IS THE INFORMATION ON THE KIDS. I DO NOT KNOW THE FAMILY OR ANYTHING ELSE EXCEPT WHAT IS ONE THIER GRAVE…

THE NAME: Charlotte E. Davis
Birth: 9-14-1872
Death 3-16-1873

HER SISTER
NAME: unknown
birth 9-3-77
Death: 3-16-78

BOTH BURIED AT TOQUERVILLE UTAH…

THEY WERE BOTH 6 MONTHS OLD, BOTH DIED THE SAME DAY, AND THEY WERE 5 YEARS APART IN AGE, I AM TRYING TO FIND OUT WHAT HAPPENED TO THESE POOR LITTLE GIRLS, AND WHAT CAUSED THERE DEATH

i HAVE LOOKED ON FINDAGRAVE, AND IT LISTS THE YEAR BORN AND DIED, BUT THE CAUSE OF DEATH IS BLANK

AND I DONT WANT TO HEAR, " YOU WILL PROBABLY NOT FIND IT"
EXTENDING TEH QUIESTION.
I DO NOT KNOW THE NAMES OF THE PARENTS, I HAVE TRYED TO GOOLGE, ASK,YAHOO ECT. AND CAN NOT FIND ANY THING AND I MEAN ANYTHING!!!! YOU CAN E-MAIL ME AT SLINDSAY@HE-EQUIPMENT.COM IF YOU ARE INTERESTEDD IN HELPING, THANNK YOU ALL SO MUCH!!!

well now you have me intristing
extend this question i will help you on your search (:
my mom is a police officer so she may have aces to this sort of things