Ugh.
I realize I forgot to follow up on how this went—objectively, it went well. She was on "good behavior" for the few days of my visit and we were able to have some difficult conversations about our different communication styles and my boundaries when it comes to her asking questions about my personal life. This gave me some confidence that going forward, these short visits will be manageable as long as I am firm about my boundaries and make plans in advance.
But that was several weeks ago, now, and unfortunately, things are rocky again. I found out this week that Mom has been sending pictures of me and my girlfriend to her mom (and perhaps other relatives) despite me asking Mom specifically not to tell others about this because it's a new relationship and I don't want anyone to form outsized expectations.
This has been a repeated problem with my Mom—she just can't keep a secret, and this is one reason I'm reluctant to talk to her about certain topics, and yet she constantly expresses dismay at how I "don't tell her anything" and when I tell her I don't want to talk about something, she regards it as an invitation to ask about it again in different words.
Anyway, I confronted my mom about this on the phone today and she got upset, saying "How was I supposed to know that was a secret?" I know she knew I didn't want her to share this, not least of all because her Mom told me (on the phone earlier this week) that she "knew she wasn't supposed to bring this up with me but ..."
So Mom pivoted to "Well geez, why would you want to keep a thing like that secret? It's good news, after all," and in fact I can think of several good reasons to keep it to myself (for example, wanting to share the good news myself rather than through her?) but I held my own and said that it shouldn't matter why I want to keep it a secret; if I tell her something in confidence, she needs to respect that.
Then she went "Well, I guess I'm just a failure as a mother once again" and abruptly ended the conversation.
Man, how do people live like this?