Maltese person here who has been following this journalist for a long time. The international reporting of this omits a lot of important information. It is far from certain that her assassination had a political motive. While I admired her for uncovering cases of corruption, she also had a very nasty streak, resorting to things like publishing revenge porn [1][2] and mocking women for the way the dressed [3]. A revenge motive completely unconnected to politics cannot be excluded.
I don't deny that the circumstances of the assassination are suspicious, and I also think a political motive is possible, but people are jumping to conclusions without waiting for evidence.