Yeah you would have to cut most of the buds off of her. Transplant her into new soil, as well as trim down the root mass to equate for the top mass that you cut off. Roots and plant grow together, so when you cut alot off the plant, you need to do same with roots. This will help your plant revert back to vegging.
Reveging takes a while, usually a month or two, so dont be impatient. Also when you transplant into new soil, I would reccomend buying transplant solution from walmart or something, to help decrease shock from everything it has to go through.
goodluck mate<3