I heard once that "The more jealous you are of your child's relationship with their care provider, the better." Now, this is a little exaggeration but the right meaning is there. If you are jealous of the relationship, it means your child is bonding to their provider....and that is a GOOD thing! You want your child to be loved and cared for and happy and held throughout the day. If you are not able to be the person there during the day, you want to find the best substitute that you can. And if they are good, you will probably be jealous. Your daughter will not love you any less than she would if you were with her 24/7. She will simply have MORE people in her life that love her and care for her. That is WONDERFUL!
I have been on both sides of this fence. I worked full-time outside the home for the first two years of my older son's life. I had a GREAT care provider his first year and he really LOVED her! Yes, I was jealous at times...but I knew she loved him and would do anything for him. That was the most important part for me. When he was about 2.5 yrs I opened my in-home daycare (in part to spend more time with him) and I have had several children from about 10 wks on. I love them and care for them as I do my own children. I want to be the best substitute for the parents that I can be.
Try not to worry. It is a good thing! You have found a good person to care for your little one. Take comfort in that. And spend your time at home cuddling and loving and playing with your daughter. She will laugh. She already loves you above anyone else. Really. :o)