K.M.
I did the exact same thing for my child. My doctor wrote the prescriptions for the shots and would administer them, I just had to find a pharmacy to fill the prescriptions. Ask your pediatrician if he/she will do the same.
I had a hard time finding a pharmacy because they have to buy them in bulk and there wasn't enough demand to make it worth it. Walgreens and CVS both said no (Walgreens was just plain rude about it). However, the pharmacy inside St. Joseph Health Center filled it with no problem. And they treated me respectfully.
Don't apologize for what you are doing, and you don't owe anyone an explanation for why you are doing this. Just go with what you feel is best for your daughter and keep a smile on your face!
Good luck!