MiMo - Toddlers usually bite to express their feelings, as they don't have the vocabulary to use words. Moving house has probably made this worse as it's all new and possibly frightening and not what she's used to. I don't know how to make her stop, other than making her feel secure and loved. She's not being "naughty", she's just trying to express herself. I would possibly try re-directing her behaviour, by distracting her with something else. And keeping a close eye on her, so she doesn't use her little brother as a teething ring!!!

HTH

Celsie. xoxox