Mom calls only for money

So my mom called me today for the first time in months. She finishes telling me about her and my dad’s lovely, warm vacation before she breaks down sobbing. She explains that she needs 500$ for a medical bill but can’t afford it. She asks me for the money, and says she can’t take “no” for an answer, and that she has no other options. I asked why she’s taking vacations if she can’t afford medical bills, but that, apparently, is besides the point. I sent her the money. It sucks because I had been saving that to buy some nice gloves and a coat, because my current gear is in rough shape, and Canada be cold. The craziest part is that she isn’t even supposed to be the narc parent; my dad is. Feeling very lonely and sad about it.