If she is going into a post-laying shed, then there is no doubt that fits as dystocia. The question is what to do about it? On the small, obvious infertile eggs, aspirating them likely will NOT help. They are SMALL enough to pass easily, so making them smaller won't help her pass them. Not really. It would, however, increase the chance for medication and require antibiotics to reduce the minor chance of infection. I would strongly recommend AGAINST aspiration of small, infertile, slugs. No doubts there.
What is left: wait or patience (if palpation is not possible since they are too high up). Me? I'd do patience. Both options can be successful or fail miserable at helping the animal. Surgery is expensive...and often results in an animal that is not safe to breed again.
It is NOT unusual for a female to keep a slug or two - especially higher up. If small, we almost never personally worry TOO MUCH about it. We've had them pass them months later (or weeks later) with no problems. We've even had them pass the slugs during the following brumation. I know one friend who had a kingsnake pass the four, hard, slugs the following year with a normal clutch of eggs! None of this is recommended, but we have tended to find WITH SMALL SLUGS patience USUALLY (not always) works best...and just wait for the female to lay those on here own. Frequently, they'll just be dropped in the cage some time in the future. Surprisingly, they don't seem to be pushed out with a bowl movement... Shrug?
You need to make your own decision, but I would start feeding her small meals (after the shed) and not worry too much unless she begins to show signs of distress or illness. Period. Just watch. I'[ve got at least one out there right now with a high slug. i've got no doubt she'll drop that one in a few weeks with NO problems. If I didn't palpate the females so well after laying eggs, I wouldn't even know it was there. I suspect a lot of people find a dried slug in the cage months later....and wonder where it came from!
Good luck,
KJ