She wanted to bring a native species in that's really non-native instead of having the native, yet somehow non-native species that were already there.
My head hurts.
I’ll parse it for you. The trees that WERE there were of non-native heritage (120 Java plum trees, 100 octopus trees and 10 to 20 Madagascar olive trees). They were planted there years ago and grew large. She also inadvertently had several actual native trees cut down.
She had these trees removed so that she could replace them with native flora.
Nonetheless, you seem to miss the point: she is being fined for cutting down HER OWN TREES! She owns the trees, the land under tham, and yet she has to beg permission from her betters (the gov’t) to do what she wants with her own property.