a mum i have known for about a year has 2 children. for their birthdays i have bought a token present each - nothing huge, probably amounting to about £20 in total. i have one pre-school DS. we've both held birthday parties. each probably amounting to about the same, nothing lavish.
however - I noticed that the other mum didn't give DS any present at all for his birthday. also didn't say 'happy birthday' when he came bouncing up at the party, or celebrate him in any way.
my DS is too young to have noticed anything. what is the etiquette here, is the other mum's behaviour unusual?