What is victors greatest fear as he leaves for England?

Victor is having second thoughts about making "the creature's" female companion because of the consequences to could lead up to. I mean look at how society reacted to the male creature; whose to say they'll be more lent to the female one. Victor has all the time in the world to think and then he suddenly realizes that the new monster will have free will. This complicates things.

That he wont be able to return