u/Upstairs-Basement

I recently altered a skirt of mine that was too long and tried to mimick the original thin hemline. Problem is, it looks like I missed some of the folds covering the raw hemline when doing so, so it unfurled in the wash. It looks to be a pretty loose linen cotton blend fabric, a little stretchy (which would explain the looseness). I’m worried it will get worse with time and my stitches aren’t exactly the smallest nor tightest because I wanted to avoid puckering(I used a back stitch).

Is there a way to keep this from fraying further in the parts where it unfurled without making it uneven? I’d prefer not to have to shorten the skirt if I could help it.