I think she may be giving a great advise. Why on earth would one go through the hell of bearing children if they're unprepared? Bearing children is rafaad, one must be ready to go the hardships staying up all night taking care of infants; changing their diapers, nurse feeding them, etc. It is not easy at all. And it is also incredibly expensive if you're financially destitute. I'd rather you not go through such pains and induce yourself with such distress. Tread cautiously when it comes to such matters.
However, one thing she must recognize is that the chances of her getting married to a Somali man is rather narrow. Many Faraaxs (majority) are not sound with the idea of not bearing children. It's mentally ingrained for some to see women as a source of production of children. This was very much the case back home, as women living traditional lifestyles of bearing many children was encouraged and, at many times, a compulsory for some.
One way you could solve this debacle is to marry a man who only satisfies your sexual desires. If your Muslim, fornicating is prohibited with men who you're not married with.
Good luck on finding him, though. Like I said, most Abdis want to have 10-15 children. And the ones that don't probably have parents that do not find the concept of bearing children acceptable.