My 4yo niece has SPD but it's not something my sister (her mum) has ever really explained to me. I really struggle with my nieces behaviour because she doesn't listen and she deliberately does what she's just been told not to do. I'm not sure whether this is typical 4 year old behaviour or a symptom of SPD? I feel like whenever I'm "watching" her (if her parents are inside and I'm outside with the kids, etc) I'm constantly on her back to stop antagonizing her brother or stop throwing sand at my daughter, etc. I'm not sure though whether the behaviour is something she can't help because of the SPD or whether she's just being difficult. I think knowing a bit more about SPD would really help me to be more patient with her. I've googled it a lot but because it's on the autism spectrum, it's so hard to find meaningful information because it's a sliding scale.
I hope my wording here isn't offensive to anyone, I love my niece but find my patience gets stretched so thin around her and just want to understand what's going on. Any insight into this would be greatly appreciated!