WI: Alternate wife for Napoleon III

What happens if Napoleon III married Princess Adelheid of Hohenlohe-Langenburg in 1852?

Marring into a royal dynastic would boost the credability for the Bonaparte line.

And as Adelhied is a neice of Queen Victoria it could lead to a closer alliance between France and Britain, without marrying directly into the British royal family.

It may make him re-consider attacking German?
 
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