Learning Witch patron spells by scrolls

[pibby]

Is it possible for a Witch to learn her patron spells other than by acquiring them through their class? From what I understand a Witch's selected patron spells are included on her spell list but when exactly that happens is what I'm confused about. Is it when she gets them through the class at the appropriate levels or are they always a part of her spell list once she selects her patron?
If it's the latter that would be great because then the Witch can acquire her patron spells by feeding scrolls of them to her familiar, which would help if she was prestige classing.

[partyrico]

It would seem that the witch adds them to spells known when the witch gets them:

"At 2nd level, and every two levels thereafter, a witch’s patron adds new spells to a witch’s list of spells known. These spells are also automatically added to the list of spells stored by the familiar. The spells gained depend upon the patron chosen. Each patron is listed by its theme. Its actual name is up to the GM and the witch to decide."

It seems that without the second sentence, these spells would then have to be learned, which makes me think that a player will have to get the spells through here, and only have to (or be able to) teach the new spells to his/her familiar if it dies.