Please don't base your judgement entirely on the Ofsted report. These days, I'd give them 0.0000000001% weighting . They are sstill worth reading - if there are any recommendations such as safety issues that the childminder has not followed, you might have a different opinion than a recommendation that the childminder has acted upon or that you don't feel is particularly necessary. Like mine says to "continue to do" ... what I am already doing and parents are happy with, which I think is a waste of ink. Mine also says to do yet another risk assessment (I had 10 already), which I have now done.
The quality of information the inspector gets can be diminished through the childminder putting a higher priority on attending to mindees over answering questions or through the inspector not reading all the paperwork or through the childminder not having put everything down on paper for the inspector to read. When giving a good or outstanding, the inspector has to put down what evidence they saw to justify that grade. IMO, some inspectors might be taking the easy route of putting down satisfactory - because they could spend all day with you and still not see exactly what they need to raise the grade. That doesn't mean the cm never does these things, just that the inspector didn't see it on the day or wasn't looking/listening at the right time.
I went through the entire EYFS and typed out for the Inspector exactly what I do to meet the requirements (including all the ones that are just guidance and not a legal requirement), inserting policies and other evidence as appropriate. She told me that I had everything in place that should be in place and that I was doing more than other childminders. Yet when the report came, it was "Satisfactory" and included recommendations, none of which were mentioned at inspection. I was Good before, with outstanding in 2 areas. Parents tell me its not my service that's diminished in quality but the quality of Ofsted inspections!
You could make a list of what's important to you - think about your child's interests, what they like to do with you and at their nursery. Ask the cm for references, and contact them, even if she has written references. Ask other parents about the things that are important to you - if the cm says she does a lot of arts/crafts, you could ask parents what sorts of crafts their child brought home, for example. What did they like best/least about the childcare provided? What did their child get for dinner? Hopefully other parents will echo what your friend has said and will help reassure you.
trusted friend > Ofsted Inspector I've never met