Good morning, I would like to assist you today.
I think that you do care about your daughter's well being, although you may feel hurt that she is not contacting you, and it may seem as though she would take offense to you trying to help her. I definitely say reach out to her in some way, and make her aware of the creditors that have been calling. Although you do not want to be the one to reach out to her first, this may be a good way to establish your bond with her. Let your daughter know that you don't want to pry in her life, but that you do care about her well-being, and that you want to help if she will let you. If she says no, at least you can feel confident as a parent that you did not let your daughter down, and offered what you could.
And one more thing I would like to add, do feel confident in your parenting abilities. You have raised your daughter to be the independent woman that she is today, and no manual came with her on how to do that. It is the same with parenting an adult, you will learn from some trial and error; but as long as you stay actively willing to learn and be there for your daughter when she needs you, the two of you should be just fine. Do reach out to your daughter, generally, just as when our children are young, it takes us teaching through leading by example; set the example of love and good communication by contacting her about the business matters, and broadening the conversation to how you want to help her and keep your communication open with one another. If you do have any other questions, or need more in depth input, please do not hesitate to message for me, "earthsister." Thanks.