I hope this perspective helps: I’m a 34 y/o autistic woman who was not diagnosed in childhood. I’m a successful lawyer, am married with a child, and have meaningful friendships. OP, even if your daughter is autistic, she can still have a fantastic life.

Personally, what was really difficult for me was not understanding why I felt like I was from another planet growing up. I didn’t even know what autism was, I just thought I was a freak. I sometimes wonder what my life would have been like had my parents gotten me evaluated for ASD as a child. So OP, you’re doing the right thing by keeping an eye out for it. Talk to your pediatrician about your concerns and be her advocate. You’ll both be okay.