Of all the things she expected she hadn't expected the 'void'. It had been how she'd hidden the young woman Thor had been seeing. Jane. She felt a little touch of pride in her son. And granddaughter. "Very little can be detected within the void. It was wise of you both." Though she wasn't sure where Thanos had learned to find the stones, or if he sensed them, but unless he was more than a brute, and she doubted he was, he shouldn't be able to find them there.
But Frigga didn't dare touch any of them even in their containers. Not yet anyway. She knew the mind gem had a will of its own. Still. She moved toward the coffee table and studied them. Reached out to them, got a sense of them. Together and individually. "Okay, put them back. That way there is no temptation."