How does the Widow insult K? 5:2

The widow says multiple things that insult Katherina, such as, 'Your husband, being troubled with a screw,' the widow is telling Katherina that she effectively feels sorry for Petruchio and her behaviour is bad and Petruchio has been lumbered with a 'shew' that needs to be controlled. She as anyone would, took offence to this. She has just been told that she is a handful and people should feel sorry for Petruchio.