N.B.
I see from your "a little about me" line that tomorrow your DD turns 6 mos old! This is such a fun age, but also can be a difficult age for any kind of change and transition. High time for stranger anxiety, etc.
I have done home childcare for over 10 years, and other forms of childcare for a total of 20+ years. In that time I have learned some things. Consider what your home was like for those first 6 mos.....likely it was much less noisy and chaotic than the daycare. It sounded and looked different. And I am sure it smelled different. I firmly believe that all of these things can create a very confusing little world for these babies! They need time to assimilate it all...differnt lighting and things to look at...voices that are not the same as Mommy and Daddy....alot of movement and action...and the smells as well...wehn a baby nurses or bottle feeds they are snuggled up tight and can smell your prefume or other scents...or just the smell of YOU...and now even that basic thing is different!
She will likely adjust in a week or 2...be patient...and the more comfortable she feels, the more you will adjust I am sure....
I tell parents that that is my biggest weakness in this business of caring for kids.....I have never been in your shoes...having to put my precious child in the care of someone who until recently, was a stranger to me. I do not envy you the position, but do agree with the other posters, that it is likely to improve soon.
Good luck!