OMG, thanks to all the judgy posters on this thread for adding another layer of pressure to the non-stop trips to the grocery store during this super-busy time of year.
Now if the kid(s) who happen to be with me get cranky, ask for another treat, or just want to be held and I look a bit overwhelmed while trying to juggle a cart, pay for my groceries, and hold a squirming toddler who refuses to sit for a moment longer, I'll have people thinking I have more kids than I can handle.
THE. BABY. WAS. ON. THE. FLOOR.
This is not about being judgy of overwhelmed Mamma's. And its not about busy days with crying kids in tow. Of course being a mother is overwhelming and very very unglamorous, especially this time of year.
This is a woman who left the store while her baby was crawling on the grocery floor during a very busy hour. Of course she needs help. But OP has every right to be bewildered by this behavior.