Is it OK to say in that way?
She can argue her point.
For example, to say it when describing a person. Meaning she knows what she is talking about and her speech can be proved by certain facts, if required.
The reason why I'm asking is that a trustful friend of mine told me it's not ok to say in that way, but it sounds normal to me.
UPD
Thank you for replies!
Context. Speaking about person:
— How would you describe her?
— She is definitely not a chatterer, she can argue her point.
That is, she is sufficiently knowledgeable and articulate to make a logical argument (Case A is Jay's answer).
Friend's thoughts (in my translation):
Phrase is not entirely correct. According to Oxford dictionary [1], second example “exchange or express diverging or opposite views, typically in a heated or angry way” is not suitable since we don’t want to say she can argue in an angry way. In first example (“give reasons or cite evidence in support of an idea, action, or theory, typically with the aim of persuading others to share one’s view”) we have to use “argue that / argued for / argue someone into/out of.” But it’s my personal opinion. I haven’t heard natives to use argue in a meaning “to give arguments”, they rather use “to prove” / “to give arguments” / “to state your point of view” etc.
Also we have to keep in mind that dictionaries are being made with certain inaccuracy.
References: