My MIL babysits our 3 y.o. while we work. Yesterday, I asked her to also care for my son, 7, during summer break. She said, “My only duty is my grandson, I want $15/hour for your other kid… This is not a free daycare!” I told her she should be ashamed and left.

At work, my son called in a panic, crying. I rush home and find that my MIL had left the house. My son was alone with his brother, and he had no idea what to do. I only found a note from my MIL, saying, “I told you this is not a free daycare!”
I was shocked. I took my kids and left her house instantly.

When I told my husband what happened, he looked at me and said, “She’s right. You cannot force her to take care of a kid that is not even related to her. He’s not her responsibility.”
Now I am even more furious. What do you think I should do?
Source: brightside.me