At mils today there were some other guests - neighbours I think. One commented that my 20 month old dd nods and points a lot but doesn't talk much and I should consider having her checked out as she's far behind her dgd of similar age 
I admit it's got me wondering though. Dd clearly has no hearing issues, she can understand instructions with several steps involved. She can make her needs known (to us) but the only clear word other people can understand is mama. She has probably four more where I know what she means. AIBU to be annoyed by the strangers comment and am I being even more unreasonable to have let it concern me?