As for the family tree - I found a Thomas W Winder not sure who he is in relation to Nikki?? Whether he is her dad or brother. Thomas Winder did come up as father on Google but the full name was Clayton Thomas Winder which does not fully fit and deceased. But the name has clearly been passed down. Sorry if what I say seems a bit jumbled.
Thomas W Winder had a photo of his mum as well . But there were two names in that photo. So again not sure which name belonged regarding his mum. The two names were Aden Magee and Clara Worsham. I think it most likely Clara but again unsure.