Quick Question for MaF

I’m re-reading Mist and Fury — pretty early in yet, and I’m right at the wedding scene, where Feyre spots the red rose petals and starts having something of a panic attack. I thought this part was shady the first time around, too, mostly because it sounds like Ianthe did the bulk of the wedding planning and decorating, including her and Feyre having a conversation about the flowers where Feyre explicitly told her “not red”.

What’s y’all’s take on this? It seems like Ianthe did it on purpose, but why? Just to be cruel? Did she intend to try and steal Tamlin? Did she want Feyre to flee? I don’t remember it ever being mentioned again.