Hi M.,
Balancing career and home is difficult for all moms; so you are not unusual in this. I would not, however, let guilt control your actions. We all make different choices. (No, we really cannot have it all!) If you love your career than do not give it up. If you sacrifice your own happiness to cater to what you believe, out of guilt, is best for your daughter, you will be dissatisfied and resentful.
Having a happy mom is what is best for baby. In addition, you will be a role model for your daughter as she grows up to be a strong woman who continues to value herself and her needs. Obviously, you still have many wrinkles to iron out. It sounds like moving your daughter to a new childcare provider is a good choice. Spending two hours a day on travel is two hours lost on other things. Your daughter will likely adjust very quickly. If she doesn't then there may be a bigger problem with the provider than simply the fact that it is new. Children tend to adjust very quickly to new environments as long as all of their needs are being met.
Once you have established a routine (and let go of your guilt) you will find that your choice to go back to work is a fine one and the time you do spend with your daughter will be more joyful and less stressful.
Best wishes and God bless your family.
J. L.