OK, I'll start at the bottom and work my way up!

The running away is not a glitch. If you praise a peep too many times, they will complain that you're nagging. Watch the blue message area above their action, and you'll see what they're telling you.

The "out of order" ages at transition time is not a glitch, either, but you could say that it's not necessarily the best design choice if you're looking for realism. The children's ages, occupation, and desire for children is randomized when you press the transition button. Since the children's ages can vary widely, the game puts them in an age range that is right for starting out on their own. The family birth order is not maintained. That can lead to what you're seeing with the ages.
The bug with parent/child breeding was fixed in the 1.00.02
update.
Lewanda, can you provide a screen shot of the kitchen problem? We have not seen that. If you're not sure how to do that, you can see detailed procedures
here.