I need some help. I have 18-month-old twin girls and for the last couple of weeks one of them has been getting more and more miserable. She used to be happy to play next to me.

Now she has to sit on me and cries every time I walk away even if it is to the other side of the room to get a tissue. Also when I tell her things like sit on your bottom she bursts into tears.

Should I comfort her or ignore her?