My SIL is, as she quite frequently likes to tell me, a qualified nanny. I have 2 children, who are 4 1/2 and 2 1/2. She has 2 boys who are 2years 2months, and 3 months old. Ever since I had DS1 she has criticised, told me I do things 'wrong' and that she should know because she has a childcare qualification and I don't!
The 'worst' (I think thats the word I want) criticism she ever made, was telling my partner (her brother) that I was putting the baby car seat in wrong. By baby I mean rear-facing. I put in it the car with the handle up, where it would be to carry it, as per the instructions. She then told DP that I was 'risking' our son's life as the handle should be down. She told him not me, as she 'knew I was touchy and would get upset'. Anyway, I then checked online,in the instruction book, and in the shop where we bought it, and confirmed that I was correct. I showed SIL the instructions, and she told me they were wrong (because Graco don't know how to fit there own carseats )
Anyway, her baby carseat doesn't fit in her husbands car, so she had to buy a new one just after DN2 was born, and they have one in each car. The new one she has bought is a Graco one, and she is STILL fitting it with the handle down, even though I showed her the manual for my DS. I mentioned it the other day in a casual 'Oh have Graco changed the fitting instructions then?' kind of way, and she replied, "No, you have always fitted that seat wrong, you are lucky you never had a crash, the boys would have died!"
AIBU to think that as a 'qualified nanny' (which I only mention as she goes on about it all the time) she should know how to correctly fit car seats, especially as they come with instructions!?