u/Educational_Flan2665

My sister in law gave me some kefir grains and they were totally normal when she gave them to me and I successfully made a few batches of kefir. but i had to take a break so I put them in the fridge with some milk for 2 weeks and when I pulled them out to start again they look like this now. I’m so confused. Did I kill them? is it safe to use these to ferment with still? I’m ashamed to tell my sister in law that I killed her kefir grains so quickly so any advice on this is greatly appreciate!