She was an ignorant and superstitious person
Well for starters a prefix is at the beginning of a word while a suffixes at the end of a word no the prefix would be ‘ch’ maybe it if you need a prefix added to the word it would be good to add ‘re’ to make it rechallenge
"I told him a friend of mine had commissioned me to make some inquiries about a cherished companion" would be a complex sentence because the second half depends on the first.