Beautiful girl I am guessing not bengal mixed but there is no way to know for sure. I think she is a dsh brown tabby mackerel, but her pattern is sort of unsual and her background is light giving higher contrast. Bengals usually have a shorter space between their ears as well.
Here is a link with a pic of the bengal head/ body shape vs other cats.
I love her pattern, very striking, but it is not a Bengal pattern. Bengals come in several different tabby patterns, but mackerel (striped) is not one of them.