#Anwen wouldn't be surprised at Sebastian's boggart but Anwen's boggart would be a punch in the gut for Sebastian

[serpensortiamaxima]

I can't remember the exact order in which I did the Sebastian questline but the cutscene where they learn Riddikulus in DADA would have been so incredibly awkward if it happened after Solomon's murder.

Anwen's boggart would take the form of the inferi and the relic, while Sebastian's would very likely be Anne's dead body and ugh, the discussion that would ensue would be something.