refreezing breastmilk?

Tatiana🇨🇷♈️💍🇩🇴♏️ • Happily Married. 💏 👰🏽 12.19.08 💙 07.10.16 💓 02.29.20 💙 🐸 🤱🏽BreastMILK is best 🚫 formula
I had surgery on last Friday ., I left my 6 month old with my mom and sister for them to take care of her. I left them with 50 frozen bags of breastmilk because I was told I would be in the hospital for 5 days but didn't want my daughter to run out of milk. Long story short., they put the breastmilk bags in a cooler filled with ice but the milk unthawed in the ice... can I refeeze the milk? If not, How long do I have to use the milk ? I have like 30 bags of milk all ranging from 3-6 oz I just wanna cry right now 😩😤