Both sentences are grammatically correct and can be used. Might that woman take offense? As it's currently written, it's hard to tell exactly what you're asking.
You are welcome is a. From the statement we tend to say something is on my mind when something is preoccupying our thoughts i thought you were going to say that the best choice was there's a. What would be the short response to a thank you, especially in written communication?
Both are grammatical and fine to use in conversation. However, as a native english speaker in the us, i would absolutely say it's far more common to hear you're welcome. You idiot or you're an idiot i want to know which one is correct because in the first one there is no auxiliary verb. Please clarify your specific problem or provide additional details to highlight exactly what you need.
Since as we all know glue. You're better off saying you da woman! instead. You are is normally contracted to you're in speech, because english doesn't like two vowels without a consonant to separate them, and one of. The two sentences mean the same exact thing.
Is it possible to say welcome instead of you are welcome? Can it be used for a woman? Whatever you say bounces off me and sticks to you. As i mentioned in my comment, the usage depends in reference to the context of where it is used.
As i know if i wanted to say that someone is like. I use looking good when i'm encouraging someone to keep doing whatever it is they're doing.