It is genuine and I can tell you how she did it, because I also have a toddler roughly this age and my SO went through multiple blogs of such, for lack of a better term, turbomamas, getting increasingly frustrated with each subsequent entry.
The answer to that is alluded to in the last point - grandpa (and probably grandmas on both sides) are there to step in when she needs "me time".
And husband, too, who is mentioned on the linked page. This is called "having a family" and many parents benefit from spouses, grandparents, aunts, uncles, etc. Not everyone has such a family network to depend on, but it's a great source of mutual support when you do.
The answer to that is alluded to in the last point - grandpa (and probably grandmas on both sides) are there to step in when she needs "me time".