Hating your mom for not helping you buy a car, but you help her?

I wasn't being real specific in my post, and that's my fault, so I'll go into more detail right now.

I asked my mom to lend me money previously and at that time she agreed to it. Her exact words we're, " I'll lend you the money. Just give me a few weeks and I'll help you get your car ". I waited a few weeks, and still no word yet, so I decided to confront her and ask her. Then she said (As seen above in my description), " Oh! I don't have anymore money, just a few hundred dollars left! ", and that was the end of it.

I'd agree with you about me being immature if I just asked her for money and she said " no " the first time, but she gave me her word and didn't follow through with it. Not only that, for some reason she felt the need to lie too.

I don't think any other person would react and take this anymore differently then I have. It's dishonest and misleading, and I don't think it's wrong of me to have resentment towards my mom for that.