Hi,
Probably the best way to get started is to go to your local community college (preferably one with a nursing program) and get started taking your pre-requisites. Even ADN programs require some classes first and sometimes those have to be finished before you get on the waiting list. Math often hangs people up- needing to take some classes before the required one and they need to come in order. Eventually you will need to take statistics
Then, while you are on the waiting list, continue taking some of the pre-req's for BSN programs (or work as a CNA) and when you can, you can apply at BSN programs if the waiting list is still going. Don't be too put off by the amount of time you will be quoted for ADN wait lists- it usually doesn't take that long.
If you start with the ADN in mind then you can go to school, still take care of your family, and comm college IS way cheaper than a 4 year school- even if public.
If you get the ADN first, then you can work while getting the rn-bsn (which are usually online) and maybe your employer will pay for it. Your options for CNM in CO are like you have seen, Frontier or CU. Or move temporarily for another school.
How do I know all this? Am smack in the middle of it. I am a CPM now, but as I was waiting for and doing my apprenticeship for that, I took classes at the local CC. I am going to start the BSN (clinical portion- I did not do ADN first) this winter and then off to CNM/FNP afterwards. I plan at this time to continue doing home birth or maybe begin a birth center. Eventually, I will teach- nursing education.