aww, youve got to stick at it. when i was at my parents we got a little jack russell and the first night we was planning on keeping her downstairs with her bed, food/water bowl, toilet etc however she just kep crying and crying so guess what we gave up and since then she has always slept in our beds and currently sleeps with my mum in her bed haha.
dont give up if you really dont want her to stay in your bed

good luck