[quote=@Mokley]
[@Girlie1Bomba] Ok! What is "inbetween space" and "abandoned mortalized dwellings"?

(there's a lotta worldbuild here, I'm thinking xD)
[/quote]

K soooo like going back to the whole: "for every tree fallen, the greenery expands upon its boundaries." The flora takes over the buildings and alleys but not the main road. So imagine a bunch of magical flora(forests) taking over the buildings and alleyways behind the main roads. Vines and branches entwine over the road creating another level of living. Flowers large enough to bed a tiger spring forth from all over and even hang from such intertwinings. Faeries, pixies, magical butterflies buzz and flit about. The wind blows, the trees sing. The Fair children, gnomes, elves, satyrs, centaurs and others traipse about. They are the wards and caretakers of the abandoned buildings so you could imagine just what kind of decor and decorations they have done to thesse "[b][i]abandoned mortalized dwellings[/i][/b]." 

Trees, shrub s and bushes line the '[i][b]inbetween spaces[/b][/i]' of the abandoned buildings and alleyways. Song, dance and love has over taken this construction but should any not being a 'child of Mama Rayn' enter the Greenery, the treatise states that; "The Unicorn owns all that is of her Greenery." Meaning' if you enter her domain, she has all rights to treat you as if she owns you. Thusly, the 'mortalized buildings' have been abandoned. For she owns all that sits on the land, the 'inbetween spaces' included; the alleyways.

Does this make sense?

I see her being all-powerful and all consuming in her domain, but a slave to such a fate; she MUST take care of her station, lest she fade away into nothingness. The main roadway is not hers and she will only traipse upon it in dire circustances. Her children, including the trees and grasses and bushes, are turning to stone and thusly she treads upon the 'mortal domain.' The Mainroad. Cuz she is desperate now and needs help.

I know, I sooooooo know this is soooooo much to ask for in your world but I am willing to downscale it all. Just let me know.