Initially I accepted this as a phase but lately it's increased at a frightening rate - it's happened twice already this morning and the first bite drew a lot of blood. DD1 (3y) has several scars now, and DH (a doctor) reckons some of them could be permanent. The bites are really severe.
DH sees childhood injuries daily and is worried that DD2 (19m) may seriously injure DD1, especially if she goes for her face. We're also worried because altho DD1 isn't a biter, when all this started she did bite a girl at nursery, and if this continues she could do it again - in which case she will (quite rightly) be sent home.
Because we put DD1 on the step if she's really naughty, I've started doing this with DD2 when she bites (partly as a demonstration to DD1 that DD2 isn't allowed to get away with murder), but DD2 really isn't old enough to understand and just walks back to where we are. After the 2nd incident today DH whisked her upstairs and put her in her cot for a bit but that didn't seem to bother her much either. She does say sorry and cuddle DD1 if told to, but generally finds being told off ('NO BITING') pretty funny.
There must be something we can do? Or does DD1 just have to take her chances?