with spell casting regarding spirits i advis cortion you can accidently provoce a spirit if a spell directed at it does not work how it is meant to or does not work at all while the spirit is showing no sign of harm to you or your familey i would leave it be if it starts to become agressive etc do not try to cast on it yourself a spell to invoke a spirit the rid you of it is a complicated one if it does become aggressive or mischivent then i suggest the same as the op leave the house and stay with freands or familey for a week and contact a local paranormal investagation group but research them thouroley before asking them to come(there is many fraud investigation groups and con artists)