Yeah if it was actually that I would understand the art piece and that was I initially assumed was its meaning but her meaning of her art piece as she is stating it makes no sense whatsoever.
I dunno, man, it seems pretty reasonable to me.
Spring is a time of flowering, but it's also a time of rebirth, and rebirth necessarily implies death.
To point up the implied death in the natural cycle, she wanted to make nooses (a pretty clear symbol of death), but make them colorful and vibrant like spring.
Making them rainbow-colored also connects to the rainbow's existence as a symbol of rebirth, cf. Noah and the Flood. At the same time, the use of nooses also calls back to the Norse custom of using hanging for human sacrifices, which pagans did to make sure spring would come again after winter. The connecting together of these two religious traditions helps to show the commonality of the experience of spring as a time of renewal inextricably connected with a preceding time of death.
Now, I mean, it's possible she didn't think of any of that because apparently she didn't know about, like, racism and homophobia, so she seems a little sheltered, but I really don't think it's an intrinsically crazy art piece. I think it would be pretty cool, like, with a label or something to explain that it's not about lynching.