OP, this is vulnerable time for you.
It's all so new.
Women like that take your peace from you and are certainly not friends.
There's a particular type of woman that does this and it is absolutely painful to listen to.
She will probably be doing this for all her children's lives. It just the way she is.
The best thing you can do, is back away in your own time.
Until you feel ready for this, respond with "really" , do not engage, do not encourage.
Respond with "all in their own time" on a loop.
Some of these woman get their kicks from putting the wind up others.
They have no idea how dull and tedious they and their conversations are.
Hangout with women who make you feel good about yourself, make you laugh, are supportive and not judgey.
That's what you need in your life.
All of my children did everything last. I really mean last.
Sat -9 months
held head 6 months
rolled over12 months
crawled 14 months
walked 18 months
talked - only a handful of words til 30+ months
you name it. Both boys and girls.
They are extremely healthy, sporty, happy, academically very strong young people now.
It had absolutely no impact on them.
But I did definitely worry at times at how late they did absolutely everything, especially the first.
My closest friends baby walked at 9 months and had the vocabulary of an adult at 24 months.
Try that when you have a nearly complete silent child at 24 months saying nothing more than car, ball, Dad! I used to console myself that he was the happiest, smiling little fellow that rarely cried and slept well.
If ever you have an issue, your GP is the person to ask for a definite answer.
Other than that, take people like this competitive woman with a pinch of salt.
Best of luck.