@Bill3 - Thanks for your post. I think you're right. I have to stop thinking that "I set a precedent" that somehow obligates me.

One idea that helps me a bit is considering that this may not represent total innocent friendliness on her part. She wasn't born yesterday. She may sense that I feel kind of stuck being receptive to these advances . . . and she's taking advantage of that. I'm probably not the first person she has "love bombed." If I disappoint her, she's probably been through that before, but just won't give up this strategy of expanding her social contacts.

Now I have the second person to deal with. I did promise her a phone call. I'll make it, but not offer any extending commitments. I have a headache now.