You know, in situations similar to this, the night actions always go in a specific order. And usually, Investigators go before Killers, so her action still might have worked. However, I think she may have been blocked and killed in the same night. Max (the Russian Mafia Godfather) killed her, but there was no Russian Mafia kill the night before. Maybe they tried to convert her on Night 1, and then found that she couldn't be converted (usually, major night actions can't be converted). This would cause them to suspect her of being extremely dangerous to them, so they decided to kill and block her.