Invasive thoughts

POTENTIAL TRIGGER WARNING/ MENTION OF SELF HARM ( Not sure if it’s needed but just in case)

Hi Parent to a Child who is 8 who is having really bad invasive thoughts. Is this related to an ASD diagnosis? It started over little things like wanting to say hurtful things- so she will get it into her head that her inner voice is telling her to say she hates me - it would be after her repeatedly saying “I love you”. But it’s progressed to her telling me she has this urge to keep shoving her hand inside to her mouth and down her throat. Or to close a car door on her hand. She hasn’t ever done any of these as she knows it would hurt and be a silly for her to do. But this morning she did that her inner voice is telling her to cut off her head. I have tried to talk to her about it but kept it light and distracted her a little with Minecraft. I’m just not sure what the best way to deal with this? We are at the end of a very long waitlist for support with local services and psychology services.