Drama Queen

Beth has been unusually sensitive of late.

She bursts into tears at the slightest grievance - real or imagined.

If you express an alternative opinion, she cries.
If you appear to criticize, she cries.
If there is a change of plan, she cries.

Her daddy and I are having to tiptoe around her to avoid being the cause of one of these episodes, as we would then have to spend an inordinate amount of time consoling, cuddling, distracting and trying to restore her good humour. He has been amazingly patient with her, while I tend to think she is being over-dramatic.

I wonder if this is a common development in 4 year-olds?
Is it because of the impending move and the prospect of a sibling?
How do we handle her rightly and respectfully?
I want my resilient, in-your-face little girl back!