Theres a bit of symbolism (aka, me trying to do the whole 'deep, mysterious meaning' thing) The little flower, the pastel one, is supposed to represent happiness or control. The flower loses one its petals everytime something big impacts Lavenders life in a negative way. Hermouth moves less, or becomes is less dynamic. Shes losing the energetic spark she once had Her edgy 'wow look black stuff coming out of her eyes' isn't some kind of 'look, im insane' thing, more or so just when she gets really angry. Anger is a big part of her personality. This is meant to show her slowly decending into a dull, angry, sad, hollow shell. I hope that kinda makes sense haha ;w;

Also, its meant to go with this song: https://www.youtube.com/watch?v=RQxDM2K-hd0 , at 0:44