My 9yo neice is neurodiverse and can say some really hurtful things when she is worked up. The last time I saw her she told me to leave the house and when I left and I said to everyone "see you soon" and she replied "I hope not". I went home feeling really upset. We normally have a good relationship. Her mum sometimes tells her not to speak to me like that but sometimes ignores her. How should I respond to my neice?