The purpose of my letter was to put the ball in her court and find out. This way, she has my FB profile and if interested to add me as a friend she can. If not, then I understand too.

Like I said in my original post, because her profile isn't set up to not accept friendship adds, but when I had asked she said "Yeah, sure, fine", I didn't know if she just forgot her FB setting not allowing adds. Thus the letter.

I didn't feel it proper for me to go asking her for her phone number since we are just friendly acquaintances and she's a married woman and it wouldn't not have felt right asking.

I may never know, but just hope the letter came off to her as just a nice letter and not a creepy one as the very last thing I'd wish is her to feel that way.

I'm thinking not too creepy as if so her husband could've knocked on my door and told me to knock things off. Plus, would not have blamed him. But to my credit, in my interactions with her , there was no flirting at all between us. Just supportive friendliness.

Thanks for your reply.