Remember, VP is what decides who wins the game, not killing other models. (Unless you have slaughter, but then you're screwed anyway.)
So, as long as you avoid Lilith and focus on your schemes. you'll be pretty much set. Look out for transposition, and if you absolutely HAVE to go through Lilith, try using attacks or spells that don't let her use that Df of hers. A good one is the cerberus' roar. Since its Rst: Wp, and though Lilith's Wp is 6, it is still beatable.
Also, you can turn Myranda into the Cerberus', or copy roar from it and keep Myranda's Good Ca of 6(tomes).