Well I am with you on this one.. I guess this person has not done enough homework to know that a breeder should be able to be right there, take an interest... maybe she feels intimidated that you would watch over her in the wrong way.. and feel that she could lose her pet.. not sure why she would feel that,. but obviously her own problem, and nothing you are doing wrong at all....
It is ok to share this kind of thing.. I can feel your being upset.. for your babies..