The woman is not the only one taking on extra layers; Rafi reports that the man accompanying her, presumably her husband, is wearing at least three pairs of tzitzit (ritual fringes). The little boy, though, is wearing typical “western” clothing.
Not all of the women who cover up are Keren’s followers. But this woman is not wearing the “shal” typical of many Breslover returnees to Judaism.
Compare her dress with the woman below, who does have on a “shal.”