When my niece was 9 months old my SIL asked me to look after her one day a week whilst her and her bf were at work. I am a qualified nursery nurse and she preferred if I cared for her since she was so small instead of sending her to a nursery. She is now nearly 2 and I have had her most fridays since 9 months unless her parents were off work and through covid I didn’t have her. Now they have split up and are back at work after being off for months. The first few weeks the didn’t need me to have her and now all of a sudden they require me to have her one day a week again. That is fine but I have just found out my SIL is off work for 2 weeks annual leave but when I asked if I still was getting my niece (so I could make plans) she said she doesn’t know it was up to her ex partner to tell me if he was working or not as it’s his days... not I just feel like an idiot! I don’t understand why I have to sacrifice my day off work to help them with free childcare even tho she is off work on annual leave! Am I being u reasonable? I feel deflated! Hope that all makes sense.