Quick question about this one. I was wondering if you're able to share spells through your Animal Companion while this spell is active.
After reading and rereading the relevant entries it appears as though you can't, but I just want to make sure.
Relevant Part:
You remain aware of the passage of time and can cast spells on yourself while hiding in the stone.
Share Spells (Ex): The druid may cast a spell with a target of “You” on her animal companion (as a spell with a range of touch) instead of on herself. A druid may cast spells on her animal companion even if the spells normally do not affect creatures of the companion's type (animal). Spells cast in this way must come from a class that grants an animal companion. This ability does not allow the animal to share abilities that are not spells, even if they function like spells.
When you're touching the Familiar, then: yes, you can share spells while you're inside a slab of stone.