So my girl cat had a litter and now she’s been neutered, we’ve kept two of the litter which were boys they have also been done now. She was the runt of the little when she was born so she’s still small, the boys are both now the same size as her. They mean no harm and are loving boys they’re very friendly even to her mum but on the other hand she is very feisty towards them. The boys could be at least 2m away or in a different room and she’ll hiss and go for them. I’m not sure what to do I’ve brought calm cat treats hemp oil and even a diffuser but no difference. Help please!