What happens if Falkenrath Gorger dies while a madness ability it granted is on the stack?

Question

Falkenrath Gorger says:

Each Vampire creature card you own that isn't on the battlefield has madness.

Lets say someone has Falkenrath Gorger in play and discards Drana, Liberator of Malakir to a discard effect. In response their opponent casts Murder killing Falkenrath Gorger.

Now the madness has already triggered since Drana was discarded as part of the cost of the discard effect. However madness has been lost between placing Drana into exile and before casting her.

Can the player still play Drana from exile or is she stuck there now she has lost madness?

Bonus question (I'm fairly sure the answer is no) - if she is stuck in exile would playing another Gorger allow her to be cast from exile again?

Answer 1

The rules on Falkenrath Gorger already has this specific case covered.

8/04/2016 If Falkenrath Gorger leaves the battlefield before the madness trigger has resolved for a Vampire card that gained madness with its ability, the madness ability will still let you cast that Vampire card for the appropriate cost even though it no longer has madness.

Since he'll leave the battlefield after you discarded a card the madness will trigger and you will be able to cast your vampire.

Second question: Madness is a trigger, if you choose not to cast the card it'll be put in the graveyard and you can't recast it.

8/04/2016 If you choose not to cast a card with madness when the madness triggered ability resolves, it’s put into your graveyard. You don’t get another chance to cast it later.