Lost my 1.5 year old today

So I was at my moms old apartment today helping her clean it before she turned in the keys. All of a sudden my 3 year old comes up to me and says “mommy LoLo opened the door. I can’t find her.” I was like “what do you mean she opens the door?” I got up from clean omg the fridge and followed her and the front door to her apartment was open and my 1.5 year old was no where in sight. The fear that went through me was like nothing I have ever felt in my life! I am 29 weeks pregnant and RUNNING up and down the halls screaming for my baby! I Tran back to the apartment and told my mom she was gone and we both started running around her apartment building up and down the stairs looking for her and calling for her. My mom called the police who were there in a matter of minutes. We were knocking on doors and I was just beside myself with pain and fear that someone had taken my child!! After an hour of searching a neighbor lady was on the 3rd floor when she found her. She brought her to my mom who ran to me yelling that she had found her! I don’t know how she managed to get up 3 flights of stairs in minutes and how me or my mom didn’t see or hear her when we were up there! The whole time I was running around looking for her my 3 year old was reassuring ME!! “ mommy it’s ok!! I’ll find her mommy don’t worry!” She just kept saying it over and over and was running following me calling for her sister! When I had her back in my arms Khloie was in histarics balling and I just fell to my knees and squeezed her so tight!! I was so stressed out and just scared that I would never see her again!!! Let me tell you every door in my house and my moms house will forever be locked and have baby proofing on the door handles!!!! Now I am just sitting in their room watching them sleep for the last 2 hours thanking God for bringing her home safely to me!! I haven’t felt baby move at all since this happened and have done everything I can think of to get her to move.... being 29 weeks I usually feel her kick every hour... Now that one baby is safe I’m worried the one in my tummy isn’t ok and the stress of the day impacted her some how... but I do know none of my babies will ever be out of my sight again even for one moment!!! Any ideas you have to get this baby to move and kick me would be appreciated!!!

Please no negativity this hurt me more to lose her today than anything ever could and I already feel tremendous guilt about what happened. Thank you!