, here are some references:
https://books.google.com.np/books?id=sPGe7aBSkpkC&pg;=PA303&lpg;=PA303&dq;=newari+indo+aryan&source;=bl&ots;=YVfOKHH1f1&sig;=ummeTfLCETuWYeFDNH6VBXReVRY&hl;=en&sa;=X&ei;=OGtsVYHZAtDiuQTGyoKIDA&ved;=0CBsQ6AEwADgU#v=onepage&q;=newari%20indo%20aryan&f;=false

"...Newar language is a language evolving from mixed ethnic/linguistic influences that do not lend easily to a neat classification." 

" A large percentage of Newar lexicon can be traced to Indic sources."

https://books.google.com.np/books?id=kYJFPZ34ihMC&pg;=PA383&lpg;=PA383&dq;=newari+indo+aryan&source;=bl&ots;=rWfZ00Ng_1&sig;=D7iZCNtUAsQt9MG6bW_qOuF4Ywc&hl;=en&sa;=X&ei;=Km1sVZekKY3nuQSNz4HwCw&ved;=0CCIQ6AEwATge#v=onepage&q;=newari&f;=false

"There are also about 3,100 loanwords from Indo-Aryan sources, mainly Sanskrit, Maithili, and Eastern Hindi, and also some from Arabic-Persian-Urdu." from "A Dictionary of Classical Newari by Kamal P. Malla, Tribhuvan University, Nepal"

NON of the sources and examples have EVER mentioned about Newar/Nepal Bhasa having Portugese/Spanish words. So why this insistence???