first of all, how can you know if you failed? it can take years until you see the fruits of your labor with this….
I have a co worker (not someone in my office but we are in touch via email all the time) whos Jewish but I dont think shes frum at all. One of my co workers told me that when she emails her she always sends her a link to the aish.com site. I dont because I dont see how that would do anything. I just act courteous to her and nice and try to show her that the ppl that she belongs to are not “that bad”. Its funny because she told me that Im so much easier to deal with- she finds the other co worker to be too pushy