what does the writer of the letter accuse Rosalind of?

She says that Rosalind is not handsome and has no manners. She also says that Rosalind has no manners and could not love her/him (Rosalind is dressed as a guy) even if men were as rare as the mythical phoenix,

"And play the swaggerer. Bear this, bear all.

She says I am not fair, that I lack manners.

She calls me proud, and that she could not love me

Were man as rare as phoenix"