I can't find her death on FS but can behind the paywall on FMP:
Louisa FUSSELL England and Wales Deaths 1837-2007 Transcription
Some techniques you might try to find her:
Hi Stephanie,
Looks like she's in Pontypridd by 1911. It's not helped by the fact that they are pretty inconsistent in POB on the Census. This could be because her father was a miner and coal mining was a huge industry in both Pontypridd and County Durham at the time. Seems like he moved where the work was:
Louisa Cole
England and Wales Census, 1911
Household
Role
Sex
Age
Birthplace