Loan Approval with another house on my books

Hello. I am trying to get a loan to buy a house or duplex and I am having an issue because I bought a house with my sister 3 months ago and I am being told the whole amount will need to count against my DTI even though I do not live there and am not making the payments at all. Is there a lender that can see that this is an investment property for me and therefore I should be able to count that my sister is paying the mortgage not me?