Cole Train cold weather damage?

Hi everyone. This is my first post though and i appreciate any feedback.

I am growing a freebie cole train fem. seed that i got from Attitude. It sprouted and grew very slowly as a seedling under cfls. Its leaves were yellowing too so i moved it outside. I check on it like 5 weeks later and it's 8 inches tall, pretty bad shape but flowering nonetheless. I let it go for a while, watering it weekly and giving it big bloom every other week. It got real cold (35-40 degrees at night!) the past week or so and i think it might have gotten damaged from the cold. The pistils turned from mostly white to mostly brown/red over the course of a few really cold nights. I've since brought it into the garage where its getting 12/12 under 4,000 lumens of cfls (all 2700k for now). My question is, will the cold damage prevent further bud development? Will it still swell up with resin? I usually used the pistil colors to determine when to harvest, but i've decided to grow up and order a microscope today to get a look at the trichs.

Here's some pics. Haha, this plant reflects very poorly of me as a grower

I doubt its good for her but i would highly doubt it would hurt her. unless its below freezing. should be alright