tell her directly that don't kiss the baby due 衛生!! last time, my mom told my baby to kiss my maid (my mom lives in US.. so I guess she has no sense of maids in HK)... I immediately tell my mom (while my maid is also around) .. don't ask baby to kiss anyone!
you have to let your maid knows you mind lor! especially "工人個咀脫皮及生蒼"!!!