DSIL very kindly asked if she could take DD out for the afternoon one day so she could spend some quality time with her. I know this is a really nice gesture and DD would enjoy it but I just don't feel comfortable with it.
My reason for this is she sometimes lacks basic common sense. To give an example, we were once going on a car journey and she was in the back of the car with DD. She was very helpfully trying to teach her (aged 4) how to get out of her seatbelt!
I had to explain it was more dangerous if she took her seatbelt off without us realising and there was a car accident afterwards. She was like, 'oh yeah!' FYI, DSIL is nearly 40.
She also has a few mental health problems so will feel very rejected when we tell her no, so how do we break it to her nicely?
Many thanks