Cosmo na Bokura!

This 4 volume manga is about Haruko, who after her mothers' death, gains her moms familiar and her witches name. Unfortunatly Silk, the cat familiar, has been unable to teach Haruko any magic but dream communication. But beware, if anyone finds out her witch name she'll have to obey that person. Is this real or is it all in her mind? (Source: MegKF)