My mother-in-law was so upset when she saw that I wash towels with my clothes. We had a huge argument. Is she right? I don't get it

3. Proper Drying
Ensuring both towels and clothes are thoroughly dried can help prevent mildew and bacteria growth.

In conclusion, understanding the underlying concerns behind laundry practices can help manage and resolve conflicts. Your mother-in-law's reaction is rooted in valid hygiene and care principles. However, compromise and practical solutions can help navigate these household differences while maintaining harmony.