The girl really is amusing. Pam can see why Eric would be compelled to be 'lovely' toward her.

"And how many did you have until you fell on your face?" she asks wryly.

She doesn't figure her to have much of a constitution.

Pam won't give her a helping hand up, just to observe how physically capable she is at this point, still (always) listening to her heartbeat. But even from where Pam is sitting, she'll still be quick enough catch Jemma before (if) she falls on her face. Which she hopes she won't. It's a nice face. And besides, Pam will know for next time not to feed on her so deeply.