Bennet confusion in Surrey

[Sue from Southend]

I'm trying to sort out whether there are two Hannah Bennet(t)s in Dorking and would appreciate some input. All the following records are from the Ancestry Surrey Baptisms, Marriages and Burials 1538-1812.

A Thomas Bennet, of Dorking, marries Hannah Nye at Abinger in 1774
http://search.ancestry.co.uk/cgi-bin...ges&gst=&so=3A
I can't see another marriage between a Thomas Bennet(t) and a Hannah.

Between 1777 and 1783 Thomas and Hannah baptise four children at Wotton; James, Hannah, Benjamin and William.

Then in January 1789 twin sisters, Hannah and Elizabeth (surname transcribed as Base!) are baptised as baseborn daughters of Hannah Bennet.

And in May 1789 Elizabeth Bennet daughter of Thomas and Hannah is buried.

There doesn't seem to be a burial for the earlier Hannah.

1792 another daughter, Hezia (maybe Kezia) d of Thomas and Hannah is baptised at Dorking.

My interest is in an Elizabeth Bennet who claims to have been born 1791ish in Dorking and these are the closest. So, is the baseborn daughter of Hannah the same one buried as the daughter of Thomas and Hannah? How can I prove it one way or another. I'm just going round in circles and need another perspective.