I think that it is very difficult to prove the relation with newari language. Gypsey has more links with Urdu, Hindi, Sanskrit Greek, Romanian, Sinti, Polish, Russian and many others.They collected many words from many coutries where they moved to.They never came in contact with Newari. For example: Kaak= Kaaka (Uncle) Kaan= Kaan (ear) Mas= Masu ( Meat) Vaidya= Baidya (Chief or Healer) and basic counting like ek= Ek (one) Tin= Tin (Three) Panch= Panch (Five) .