Are You Nervous?

Yesterday all three children were playing outside--yeah for sun!--when Sunflower came back in early.

"Why are you in, Sunflower?" asked Dad.  "Are you cold?"
"No.  The guys making me nerus."
"What?"
"Nerus."
 "Nervous?"
"Yeah.  Nerus."

I wondered where she got that phrase.

A few hours later:
"Sunflower, stop what you are doing," I said (this is after various acrobatics caused her to hit her head 3 times in the last hour.)
"I jumping on the couch!"
"Stop.  You are making me nervous."
"I not making you nerus.  I'm jumping!"

Her words are not always clear to others, but I know what word she is saying, so when I write it out I cannot properly convey how it would actually sound to others.  I just don't remember.  She is very verbal for her age, but I don't want to mislead anyone into thinking she is a genius.  My husband and I are the only ones that believe that; well, and her brothers--the guys.