I hate this. I asked my two closest friends if they wanted to go to an event later in the year. Both said yes and the tickets were selling fast so I said I would get the tickets so we were all sitting together. We do this quite a lot. This was 7 weeks ago and one of them transferred the money within the week but I'm still waiting for the other money.
She hasn't forgotten as she says every time that I see her that she needs to transfer the money (and I say 'fab, I'm skint so that would be great'), but hasn't. I hate asking as it sounds like I'm hassling her for it and she's got so much shit going on just now. But it's £150 and I need the money.
How do I ask politely?