I have recently developed a problem with one of my horses. She is an ex hunter horse who has done a lot in her time. She is my dad's horse and up until a few weeks ago has been absolutely fine. However whenever my dad or myself go to bridle her she pulls away and becomes scared. We calm her down and eventually she lets us put it on, once it is on she is fine. I have checked ears and all around her face to see if she is hurt but it all seems normal. It is as if she is flinching because our hands are raised above her face. We are really worried about this as it has just started happening and we have run out of ideas as to why this could be. Has anyone got any advice please?