I would suggest "to discuss some of the latest issues in finance." rather than "in the finance.

In addition the original letter does say "While, I have to mention that she is girl of little obstinacy. When someone argue with her, she always stick to her ground. Besides this, she has good personality. "
Anyone receiving a reference letter like this will expect to see some mention of weaknesses as well as strengths, and this is a very minor one. In fact many university people will see it as a positive trait. I would translate this section as: "I must mention that she can be a little obstinate and holds her ground in an argument but otherwise has a good personality."

Best wishes to your sister, she does indeed sound like someone to be proud of.

Last edited by Zed; 09/14/2011 5:55 AM.