me10lee83@gmail.com

I agree, it’s one thing to say your child is developmentally delayed and offer solutions (such as early intervention or referrals to private therapy), it’s another to just make the statement and not follow it up with anything!
To this mama, this is nothing to do with parenting styles, with your child’s intelligence, or anything for you to feel that about. Maybe she will grow out of it on her own, maybe she’ll need some therapy to help her talk. Either way is not unusual and it’s nothing you did or did not do! Every kid develops at different rates and some need a little more help than others. I highly recommend seeking therapy evaluations to get experts opinions.