New/Old beginnings

So, my brother got married this last weekend. What a great event. Will post pictures soon. Got to catch up with family.
The big event was finally meeting my birth mom, Cindy, my half sister, Cheryl (Dennis) and her son. We only met for an hour, but what a monumental event. I wasn't nervous, but I could tell she was very anxious. It is hard to understand, but imagine carrying your child for 9 months, seeing her/him, and then never again. Wondering, is she ok?/happy?/being taken care of?
I can't even begin to understand. I didn't have that connection. I was just curious who I looked like, if we had any similar personality traits, etc. What a great meeting!