I have first noticed DD stare off into nowhere about two weeks ago. We were in the car and I had stopped at a store and went to unbuckle DS. I look over to her and say "Hey mama" No response so I called her name but still no response. I called her name again, getting panic-y, but she still wouldn't respond. I kinda lost it there and jumped over DS's seat and just kinda grabbed DD and shook her seat while unbuckling her. That's when she came back, crying and srcreaming. I was a mess, she was a mess and we all needed a minute or two until we could keep going.
So now today we were in the car again and she's talking and playing back there with DS and suddenly it's quiet. I asked DS (he's 3) if sister was sleeping and he said "No, baby is awake" and I look back and see her head just bobbing around but yet she must have had her eyes open. Also, her thumb wasn't in her mouth and she ALWAYS does that when she's going to sleep or sleeping. So I started to shake her seat a little bit (we were driving over a bridge so there was no way to stop for me) but no response. I had to shake it quite a bit and then she came back crying again.
I don't know what to make of it. Both incidents happened in the car, while driving. Both times she might have been tired but it wasn't around naptime or anything.
Other than that DD is normal. I haven't seen any weird behaviour, she talks, plays, laughs etc a lot so this staring thing just seems kind of off to me.
Maybe someone here has made a similar experience.