Can anyone help me identify a breed?

I have a cross breed and I'm not sure what exactly she's a cross between? I know her mother was lab/boxer cross but I don't know what the dad is :/ Does anyone think they can help? I can add more pictures if you want or give any relevant details :D ? The picture below is of her at a few weeks and she's 9 months at the moment. Please help, this has been bugging me since I got her ><.