I would like to refer you to Harry Maryles’ Emes Ve-Emunah (HaEmtza blogspot), here in Chicago, where he discusses this in detail, with comments from its readers. (09/06/12 posting)
To sum up his point, he faults her educational system, BY, for being so chareidi as to not be open enough for other frum peoples ideas, like Rabbi Slifkin’s. A comment by Shalom on the blog posting about her sadly bemoaned that “The story almost always seems to read the same: naive, poorly educated Jew abandons her community after reading a little bit of atheistic rhetoric.”.
If we don’t educate our youth about the sciences properly with Torah perspectives from ALL frum sources, we potentially create a person whose faith can be lost by just going up on the internet and reading a bit of atheistic rhetoric.