Mod or hack to re-enable a shop? [Minor spoilers]

[Tuplis]

Grenvinn (the battle mage in the elf insland) will close her shop for you after you've finished her quest and/or advanced in the main quest. For me, it was particularly brutal because she had two items I meant to buy but was holding out due to being just under the 3m cash mark to get the achievement. Later on when I got to her, she would no longer trade with me and later on she'll be gone for good.

Is there any way to re-enable her shop through modification? I'd greatly appreciate because currently I feel REALLY bummed out about this and considering starting the game over to fix it.

I remember seeing someone mention something about a shop that closes down in some other thread (oh how I wish I woulda remembered that yesterday when I was playing..) but was unable to find that topic.