The American Academy of Pediatrics clearly emphasizes that breast feeding is the ideal method that will help children achieve optimal health, growth, and development.
Pediatricians should promote and support breast feeding, as soon as possible after birth. Mothers need to feel comfortable feeding and pumping anywhere. Nursing mothers should be supported to breast feed at home or at work. A mother in the right settings can pump her breasts and have a caretaker feed the breast milk, if necessary, while mom's at work. There are many wonderful resources available to answer questions and meet individual needs.
You raise a concern that is shared by many others. As a pediatrician, I believe it is extremely important that the bond between mom and baby be supported, particularly with economic decisions often forcing many mothers back into the working world before a year is up. Although we would love to increase the number of women starting and continuing to breast feed, it is not always possible. Despite demonstrated benefits of breast feeding, there are some situations in which breast feeding may not work for you. It is ultimately the mother's decision on what fits best into her family situation. Your daughter need not feel guilty.