She is most likely a Bichon Frise. She looks just like my Chloe'. You have to give them time to get to know each other, slowly. I wouldn't leave her alone with your other dog. Keep them separated unless you can watch them all the time.
Good Luck!!
__________________ •·.·´¯`·.·•Julie •·.·´¯`·.·•  Chloé & Myah
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