Clear Tarps and space heaters, make a temporary green house of course be extremely careful and cautious. Drainage and airflow needed to be accounted for.. Keep it mind a 4 foot plant would need plenty of space around it, you don't wanna "cover" the plant just protect it. I guess it would depend on the size of the crop and the materials you have on hand whether or not it would be worth it. But that's what Iv'e seen others do and that's what I would do if I really wanted the plant to make it all the way. If I had an indoor crop on the go and wasn't horribly invested in it, I'd probably just take more of a wait and see approach. I hope this helps and Hopefully you get her sorted out.