Yeah maybe. But Lin is a very powerful bender,and if she wasn't the daughter of Toph then she wouldn't be as powerful. There for Toph has to be her mother because Toph was the most powerful earthbender ever ( I mean besides the avatar)
i know who lins father is..its not that surprising really..*smiles mischeviously* y'no i should be a good person and let the world know..but since its not that important ill let you guys find out in a later season...
i got someone to help me type this..
and i did get married...
by the way..this is toph..
In the promise trilogy sokka and toph started spending lots of time together so they probably did get married -lin. plus in a picture that i saw on the internet,called 'old friends' suki wasnt in the picture..
and if you think about it, lin kinda looks like sokka..just a little. if you read lots of old stories plenty of people married their cousins...its not THAT weird.