'Kitsune wa watashi ni kite' sounds . . . wrong to me. It's close, though.
Roughly translated it means: 'Kitsune come to me.'
To say this more clearly, and increase the chance for success, say: "Kitsune-san, watashi ni kite," dropping 'wa (is)' and adding 'san' to address the Kitsune instead of treating her (I assume you want a female, but 'san' is gender neutral) as an object. This may work better if you are close to where foxes naturally live, but a Kitsune should be able to appear anywhere.
Kitsune are dangerous, and perhaps you should add 'ichibi,' 'hitotsubi,' or 'shobi'
('one tail') before 'kitsune,' to minimize the strength of the Kitsune. Just in case, try working with anti-yokai spells first, if you haven't tried it out yet, to be rid of the Kitsune after she tries to eat you or your cat. Or find an Onmyoji Exorcist first. I know this was long-winded.