Hiya -- that doesn't sound too terribly much for licensed practitioners, i am guessing she has yrs of experience and follows the DCFS rules.
I do inhome daycare as well, but have not become licensed as I only like to take in 1 or 2 kids at a time, and I like to do only part-time work. Being licensed requires lot of DCFS paperwork that I don't have the time or want to do. I do otherwise follow DCFS rules w/ the exception that I put TV on for a half-hour more than they allow per day (I do 3 one-half hour increments during the day). (i think DCFS allows for 1 hr of tv a day). I'm in glen ellyn and charge $40 a day for infant to 1yr with a $5-less increment for each yr of age. If I were licensed I'd charge $50 flat fee for all kids though :) The need to keep paperwork would be enough of pain for me to justify the extra $.
However, on the licensed side of things, my sweetest girlfriend is a daycare provider, licensed and accredited, and though she doesn't charge as much as your provider, she does charge for the other holidays and sick days. She also has 13 yrs teaching experience. She is also incorporated w/ the state of Illinois, and she has to have a $1million homeowners insurance policy. I'd say her higher charges pay for your peace of mind and for her additional charges to have her business Inc'd and the required HO insurance amount. I, myself, have a $500,000 HO ins policy and a rider on my auto because i take the kids out, and I do mostly all organic; for these reasons I do charge a little more than a typical license-exempt provider.
Good luck to you and I hope your mind is settled a bit between licensed and licensed-exempt provider charges, and that you are happy to have your child in a nice, safe, comfortable place.