I really loved this show and binged it twice. At first, I was leaning towards she was time traveling, but after the second viewing, I picked up on how she could know things she seemingly shouldn't. The only one I couldn't figure out was the kid at daycare she kept seeing drowning. I would have been fine with the ending in S1, but I am curious how S2 will develop.
Mostly I appreciated how these characters felt like real people. It didn't feel like acting.