martha is my six week old whippet.how do i train her to sleep on her own for the past 4 nights since i got her she has been sleeping in my bedroom but is waking every two hours and is getting on my bed, and wanting to play and ios chewing my face and nipping i have returned her to her bed xamount of times but to no avail,would it be ok to train her now to sleep on her own in a safe and warm enviroment please can anyone help me i am so tired