This is my personal story. I have a 23 month old toddler and sometimes she freaks out. When I use to sleep at my bf's place, I hate having the windows open due to my previous experience and also because my child would wake up in the middle of the night and start screaming her head off as if something came and spooked her. I'm a light sleeper, being a mom I trained myself to wake up at every single slight sound because if you're a parent you don't want to be a heavy sleeper while your child cries for milk. Anywho, one night I awoke to the sound of my daughter's voice, she had softly said my name, calling me softly "Mommy?" then suddenly within seconds she screamed at the top of her lungs and I jumped out of bed to turned on the lights. It was 1 a.m. And she was freaking out, she kept jumping up and down in her play pen and she kept pointing to the ceiling and walls all the while crying the word "GO!".
I couldn't calm her down, I got this feeling like something else was there so I made my boyfriend close the window. My daughter wanted me to open the door so I did and she told me to go out and I did. After that, I took her back into the room and she calmed down and fell back asleep. This happened twice and only when the window is open. Somehow, the apartments where my boyfriend lives at always gives me the creeps, I always feel like something is watching us and the cats there are real creepy too. They tend to follow my daughter or try to creep up on her when walking.
Another time, my grandmother was going to put my daughter to sleep since it was her nap time. My grandma put her in play pen to lay down and my daughter suddenly got scared and started crying while pointing at the window and saying "mao" as in monster. My grandma took her into the living room and she calmed down. Another time, my daughter was watching Barney in the living room, enjoying herself when she started crying. My grandma was washing dishes and when she heard my kid cry, she ran up to her and ask what's wrong. My daughter pointed to the hallway and wouldn't stop crying. Sometimes it's freaky but being the adult we try to not panic and just remove her from the area that frightens her.