BY94, the best way to “love” someone is to do something nice for them. So I would suggest you do just that. Befriending them and do nice things for her will make you feel closer to her and protective of her. Therefore you won’t believe anything bad about her.
Maybe the dream was in preparation of LH that WILL be said about her and that she will need friends around her that will protect her and stand by her side. It might be a premonition of something that will happen in the future. Maybe Hashem wants you to be her friend and protect her. So the best way to get over feeling badly about someone is to do good by them.