Should I feel upset about this?

Yeah I always swore to myself I’d never ask any bullshit like this on here, but I can’t really help it.
I’ll try to spare anything yall don’t need to know.
So last week a friend of mine said she was having problems with her mom. They never got along, but the idea here is that the mom doesn’t think her daughter is able to take care of herself or do anything. That’s my friend, and she said last week her rent was gonna be late because the checks she ordered to pay it with were late. (She was out, and ordered some from the bank.) As a substitute and emergency address, she gave the one from her home when her mom lives, also. Upon phoning there to see if maybe they were mailed there by mistake, her mom offered to pay the rent because my friend isn’t ’‘able’’ to. My friend phoning there was interpreted by her mother as a disguised plea for help, or so I’m told. They got in a huge argument over that.
Except when she was telling me last week bout this I didn’t know, because she didn’t tell me her mom paid the rent already. She said that she felt ashamed about something, but didn’t want to talk about it. I learn today that what she was ashamed of was letting her mom pay her rent. (I wouldn’t be lol, but that ain’t the point.)
But through that last week before I learned this, I kept trying to reassure her about rent rules and how a few days won’t matter and blabla, and she was all agreeing with me and shit. Except it was already paid.
I understand she didn’t wanna talk about it, and I’m not saying that just cuz she’s my friend she has to tell me everything, not at all. I’m just kinda wondering why she would have led me on thinking it wasn’t paid and basically humouring me about all of this and what I was saying to try and help. Maybe it was her way to ease off the subject? Either way I felt like a retard, but didn’t wanna bring it up when she told me tonight. Should I spend more time on Facebook or something? XD What’s your take? I’ll obviously bring this up with her again because it upsets me, but in the meantime, what do people think?