Yes, you should give Anca the notes rather than burn them if you want her to complete Leonica’s ritual and lift the curse at St. Tyna’s Convent.
If you burn the notes instead, Anca cannot complete the ritual, but this choice does not lock you out of her later quests or romance.
What Happens If You Give the Notes to Anca?
Anca uses Leonica’s work to continue the ritual herself.
She succeeds in lifting the curse at the convent, although the way she accomplishes it is not exactly harmless. The game makes it clear that Anca has gone further into dangerous magic to get the result she wanted.
The convent and the fate of the nuns are also changed by this decision.
What Happens If You Burn the Notes?
If you throw the notes into the fire, Anca cannot complete Leonica’s work.
She is unhappy with Coen’s decision, but this does not end your relationship with her or stop her questline.
The curse at St. Tyna’s Convent remains unresolved instead.
Does Burning the Notes Ruin Anca’s Romance?
No.
You can still continue Anca’s story and romance her even if you destroy the notes.
So if your main concern is accidentally locking yourself out of her romance, you don’t need to choose based on that.
Does This Choice Matter Later?
Yes, although you won’t see all of the consequences immediately.
The condition of St. Tyna’s Convent depends on what you choose here, and the game can reference the outcome again later.
However, either choice still allows you to continue Anca’s questline.
Which Choice Should You Pick?
If you want to lift the curse and let Anca complete the ritual, give her the notes.
If you think using Leonica’s dark magic is too dangerous and would rather stop Anca from continuing it, burn them.
There isn’t a simple choice where everything turns out perfectly. The decision is mostly about which consequence you are more willing to accept.
Quick Answer
Giving Leonica’s notes to Anca lets her complete the ritual and lift the curse at St. Tyna’s Convent. Burning the notes prevents that.
Neither choice locks you out of Anca’s later quests or her romance.
So if you’re worried about permanently losing Anca as a companion or romance option, either choice is safe in that regard. The bigger difference is what happens to the convent and its cursed nuns.
