My 2 cents:
Try not to make a big deal out of someone that you know - misgendering you.
I see so many CDers (where I work) and I have to make a conscious effort to keep the pronouns neutral. Most are obviously men in women's clothing; and I get it; they want to be addressed as women. When I get very busy, I don't want to slip up. But I can understand how it happens. Don't take it personal. CDers are putting the onus on the public to address them the way they want to be seen. Since you know this SA and she is usually nice to you, she may have just reverted to what she knows in a busy moment.