Firstly, raise your light while she recovers and give her a good drink.
Secondly, a splint made from a bamboo skewer or a stick, held on with soft wire and attached above and below the break will save your plant, but remove the tape covering the break, the break needs to air dry and callous over. Covering the break with tape can cause excess moisture to form around the break, which can then lead to fungal attack. I have snapped many a stem in my time, even main stems and using a splint and letting the break air dry always works, to the point the splint can often be removed after a few weeks and the break is completely healed and self supporting again.
Hope this helps,......
Organoman.