Paul is babysitting pamela for the first time. when pamelas mom leaves, pamela cries. when her mom returns, pamela reaches for her but then pushes away from her. paul assumes pamela has a(n) attachment.

In psychology, it is called an Anxious-ambivalent attachment.  It is the point when the newborn child feels partition nervousness when isolated from the parental figure and does not feel consoled when the guardian comes back to the baby. 
As a rule, a youngster with a restless safe connection style will normally investigate close to nothing and is frequently careful about outsiders, notwithstanding when the guardian is available.