I suspect the fork has some damage since the rear triangle has been damaged as well. It will be an exercise in frame alignment to check to see that all is in good place.
The accident damage will in most cases create a frame that will jump back into the frame damaged state even after straightening it. (from personal experience).
You must check all frame dimensions and alignment in a frame gauge or with a similar tool. Even then there is no guarantee that it will stay in the re-aligned position. The frame will always be suspect, and may at any time jump back into the misalignment caused by the accident. So be warned to watch for the signs that it might not always track well. JMHO, MH