The perfect age to be a mum is when the women herself is ready for it. Be that 21 (in my case) or 34 (in my SIL).
We were both as stable as each other money wise, both had been in a relationship for as long and yes, she had had a career and more life experiences but I can do that with my children looking on and use my experiences as a mum to my advantage.
The one difference was that she would NOT allow anyone to touch her baby, let alone pick him up, where-as my daughter got passed to everyone and only handed back when she cried, which was rare. In contrast her son screamed constantly and where she allowed no-one contact therefore had no break and became depressed (altho admittedly she could have been like that in her twenties).
Like I said above.....it is perfect when you are ready.
Flame is saying, and I agree, that had she waited she would have been a nightmare......she was broody for three years before being ready. Mind you, her daughter still came earlier than planned as she decided that she was falling pregnant at xmas and she was actually 6mths by then!!!!
Should she now decide to wait till the 'so-called' perfect age for the second, I may just have to shoot her as even now she is bouncing about how many days it is till she starts TTC