This would also neatly explain why Quirrelmort didn’t see this coming “Snape does his level best to help Harry Potter” does not seem like the kind of outcome Q would consider very likely, so his overly complicated plot going off the rails there is perfectly reasonable.
This would also neatly explain why Quirrelmort didn’t see this coming “Snape does his level best to help Harry Potter” does not seem like the kind of outcome Q would consider very likely, so his overly complicated plot going off the rails there is perfectly reasonable.