That depends on the outcome of the House races this cycle. If the dems hold then House, all she needs to do is convince a majority of them to see things her way. That should be easy, given that FBI files will be easily available to her from Justice.
But you are forgetting that it takes a 2/3 majority to remove a sitting president. That means that the Republicans must agree that the crime Obama is accused of is serious enough to remove him from office.