Having an issue with this spell.

I levelled restoration to 100, finished Colette's ritual spell quest and turned it in. I looked through her vendor list and did find it listed there but of course I couldn't afford it. I went off and continued with the game until I had enough money to buy it/remembered about it, but when I came back she no longer is selling it. Nothing I do is resetting her inventory (like other merchants), and she has no further talk options to lead into further quests.

Does anyone having any insight or knows what's going on/how to fix it? Any help would be appreciated

You leveled Restoration to 100? Wow thats the most pain in the ass skill to level. I am healing my hero non stop and still i am around 30 or so??

I did it while leveling heavy armor, just used the most advanced healing spell available (fast heal then grand healing) while letting 3-4 bandits wail on me. Was trying to get to guardian circle since it seems cool/useful but I can't buy it anymore

Bump, anyone?

As far as I know, the vendors inventory changes every so often. I know this becuase I was after some sweet boots a merchant had in Whiterun, did a few quests to get the money, and he no longer had them... The inventory of what you can buy changes.

I've tried sleeping for 48 hours and looking again several times over and no change