...and 35W Sunglo daylight bulb (heat).
...Basking 82 - 83 ...She always sits in her basking spot
...4 locusts or crix and 2 supers.
Supplements - Calypso calcium on Mon, Weds & Fri, and Reptivite without D3 once a fortnight.
...Lays over 100 infertile eggs per clutch (has laid two clutches).
She gets natural sunlight for a few hours daily when weather, wind and temps permit.
Howdy Tiff,
As has been suggested, to minimize health problems associated with egg over-production, reducing food intake should help. Use a low-cost ($20) digital scale to track her weight. Kinyonga has previously posted, in other threads, some good guidelines that you can use to help shutdown or at least minimize egg production. Consider a target count to be less than 60 eggs.
I see that your Veiled is getting several hours a week of natural, unfiltered (no glass or plastic) sunlight per week. That is why it is safe for you to continue not supplying any vitamin D3. If that changes, be prepared to supply Ca w/D3. Is she getting other vitamins and minerals supplemented?
A basking temp of 83F may be fine so long as her actual body temp is getting closer to 90F. You can measure her skin temp a few inches away using a low-cost ($20-$45) infrared temp gun.
When was her last batch of eggs produced? There is always the possibility of one or more eggs being left behind

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A few complete body photos might help. Photos of her enclosure might help too.
Is that ReptiGlo 10.0 your original tube? That would make it 1 yr-old and overdue for replacement. Can you get a ZooMed 5.0 or 10.0 linear tube (not CFL)?
If things take a turn for the better then that eliminates reproductive damage and organ failure. If she slips away then those are possibilities. Consider the sunken/closed eyes to be a symptom of a severe health condition (human wincing) rather than pinpointing any particular condition by itself. If you can eliminate all of the husbandry issues as having caused the problem then it will likely take a qualified Vet to sort things out using blood tests etc.

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