What, because she works for the law? It doesn't always work that way.
Based on her posts it didn't seem like she was aware of the different voting systems - either that or she wanted to ignore that fact in order to make her own argument (fairly likely, I suppose).
I wouldn't like to see Farage...
Different voting systems result in different outcomes.
With the first past the post voting system for general elections it is very difficult for the smaller parties to gain seats in Parliament. European elections use a system more closely aligned with proportional representation.