How to protect my relaxed hair this winter?

Hi, I am stretched financially this month and I can’t really afford to do my hair or braid it. I’m maintaining it by applying hair moisturiser to my hair daily and oiling my hair once a week, and applying a hair mask every fortnight. Temperatures will get as low as maybe -1C in my area.

My mum is upset that I’m not doing my hair because she says it will break. What can I do? Do I have to braid my hair or put it in a protective style? Pictures are attached… much appreciated 🤗🫶🏾🫶🏾