Well, some of their behaviour comes from the brain, and with days getting longer something can get switched on there too, not just in the ovaries. She is young, so there's a lot of energy. Seems she has very strong instincts, well, that's something to live with, but quite likely it will get better.
Spring fever can last a few weeks, and return e few times over the year (with intact does, my spayed one doesn't show any, but she's a calm girl anyway)
I have a (intact) 8yo doe like this, my smallest, most pigheaded, dominant and confident rabbit, she's my favorite