Got into an argument with DH's step sister yesterday about something she said about our 3yr old son, it went from a telephone argument to her turning up at my house swearing and shouting in the street which scared my DS and then she grabbed me by hair n tried to drag me off my own doorstep , I should point out I am 32wks pregnant so my instant reaction is if she can attack me whilst my son is within sight and while im pregnant she should not be let anywere near him again , he is now afraid her and was up late sayin "aunty x is scary she hurt mummy" so clearly he saw what she did , DH wants me to speak to police but she has 3 kids n I don't want them seein there mum hauled off in cuffs I really don't know what to do.