She's so young, is this average now?

She (8F) was on my phone, not 2 feet away from me. I was making dinner but still listening to what she was watching. Nothing sounded inappropriate. When I took my phone back so we could have dinner, I hit the back button and found what she had searched for... "Boys rubing girls vijinas".......

O.O'

We had a full on talk after dinner where I found out a boy at school had been looking things up on a computer at school and she had seen... Things. (the school was contacted and their computer filters are being addressed)

I made sure all questions were answered in an age appropriate manner, and made sure she knew she could come to me with questions and I wouldn't judge her or anything.

This seems so young though! She's still a baby! She pretends she's a horse sometimes, and likes to have me feed her dinner. Has anyone else come across this? I knew I'd have to protect her, but I didn't think it would start so early!