if the conversation is going like in negative side, like if she said that she is not be able to increase my salary, how should i turn the conversation into the designation change ?
Yeah. basically, i'm planned to talk about my salary + designation
Then I think she would understand if you said something like I'm sorry about my English. My English could be too direct at times. I hope you will understand.
And then you can get to the point and talk with her like you're talking with me.