Do you know about how old she was at the time of death, or time period of birth? I've looked through most of Texas, and no luck on this Flora. There are a few close matches, as far as "colored", but they are in Virginia, one in Wash DC.
Also, if you want to try the Collin Co courts for records, they should have 1904 to the present. They can be contacted by phone 972-548-4153 by email vitals@collincountytx.gov
or by going straight to the state archives in Austin by phone at 512-463-5463. For the "rules" check out site
www.co.collin.tx.us/county_clerk/death/death.jsp