Either mom needs a reality tour of what really goes on in a typical daycare day of play or help with her laundry so the child didn't have to wear the only clean thing in her closet,lol. I totally hear you on the inappropriate clothing kids come in. The overalls with buckles and ties on potty training toddlers, outfits that zip up the back but have no crotch snaps for changing so you literally strip the child and then put them on the change mat. You might try asking the mom how she would have felt if you had let the child play in the mud in her good dress. And also how she things the child would have felt if she had been excluded from the fun because of how she was dressed.