Darren exists in a country where he would know nothing about Chrysalis. Also consider your opinion on Chrysalis is purely fanon or your personal headcanon, so while I respect it, I do not take it as canon to her character or backstory at all unless it's proven otherwise canonically.
If I were him, however, I would consider the possibilities of having a Lilan or two around - they would likely be a nice addition to his guard, along with the Valravn. That is, if he can take the time and care of keeping them under control. Hell, he could have a more truer Castlevania having a hew of them around! /SHOT