Yes, I'd say it's been safety that's the problem since then. If attackers could do that much damage even to her temple, letting her come to just any occasion would put her in danger.

[Maria mostly seems preoccupied with that subject when she moves onto it, looking a little sad. It's a shame that any one person should have to bear that kind of weight, though it's hard to say if it's deserved before they find out why these people are out for Amaterasu.]

It'd be nice if they actually caught the person behind it.