Really, sometimes my patients have asked me about a bandage and I get very flustered. It is my own problem for having cut there in the first place and a lot of my patients do not know any better because of the state of mind they are in.

Like Campanula said, it is good of you to be concerned but I don't really think you shoould bring it up. If there is a chance that it was SI, this might make her extremely uncomfortable. Plus, it's your therapy, not hers... and you don't want to turn in around to her issues.