You don’t know who’s a karov and who’s a rechok. A Jew is already perfect since he’s a chelek elokah mima’al. The Alter Rebbe says that many Jews throughout history who were emphatically not observant to any serious degree, and simply didn’t do much about their Judaism in their day to day lives still gave up their lives rather than undergo forced conversion. This is an expression of the soul’s refusal to be separate from G-d above its own existence.
My point is that any effort to encourage Jews to do mitzvos is praiseworthy, and you don’t need to be financed heavily to be friendly to Jewish girls who aren’t frum and to encourage them to partake in shabbos, candle lighting, tznius, etc.