You refuse.

After admiring her body for a few long seconds you sigh. It goes against almost every fiber of your being but you have to. It's the right thing to do...

"I'm sorry Ms. Carlos but that's not how we do things here..." you reply. You hope she doesn't notice the conflict in your whole being. It's a difficult choice to make. She has a beautiful body and you're more than aware that this decision will play on your mind for a while to come,and not just as material for your theoretical wank bank. Though its going to make more than excellent material for that.
Whilst you're briefly thinking this you can't help but notice that she's frozen completely. Her breasts still exposed to you and your gaze. Which you still haven't taken from them. You mean, how could you?
Finally she swallows noticeably, clearly herself unsure of what to do or say next. This was her last throw of the dice. Now she has nothing left... Or does she? You can't help but wonder as she begins to speak.

"But... Sir... I really need this loan..." her nervousness is clear to see. She's speaking quickly but with plenty of stammering.

"I can see that Ms. Carlos but I'm not sure that's quite how we do things here..." You trail off towards the end as you can't help but become aware that your eyes still haven't left her chest and she still hasn't put it away. Though if her cheeks were red earlier your not sure what shade they are right now. "Perhaps though we could come to some other arrangement... Given your... 'desperation'" you attempt to phrase this politely but its clear that you've hit something with your final word as her head drops.