First things first, I'm a Speech and Language Therapist. My SIL's dd, my niece, is 23 months old and has a dummy in her mouth pretty much morning, noon and night. She has only recently begun to talk. Most of what she is saying is 'where's X? Gone', saying no or asking for food/milk. So a bit delayed, but she's talking, which is a good thing.. but I'm noticing now that her speech is quite indistinct and she is backing her consonants (saying 'kicker' instead of sister) which can be associated with overuse of a dummy.
The thing is, the thought of saying anything to my SIL makes me absolutely cringe. She is a GP, three years older than me, but I've always found her hard to talk to. She says things about my job like 'oh do you not find it boring minding children all day' (???) and 'why would you be involved in assessing children with autism, that's a medical condition'.. so probably wouldn't take my opinion very seriously..
but...
I really think the dummy has to go for my niece's benefit.
What would you do, and how would you approach it?