Not only is she alone (as in 'single' - not to equate 'single' with 'alone' or 'lonely'...), she adopted three special needs children, too (I got this from following the link to her blog and then the 'about' section). From reading between the lines, it also seems she moved from the British countryside to a big Canadian city, likely leaving behind most of her social support network.
Of course it's easy for me to 'judge' (I mean, I'm not really - to each their own) from my position as a software developer with a working spouse and a traditional family in a Western European country, but still - when you're already not in a very stable position, why take huge risks like adopting three special needs children?