In English there are no masculine or feminine forms. English uses gender specific nouns for a male or a female.
The noun 'lawyer' is a common gender noun, a word for a male or a female who is licensed to practice law.
The possessive form is lawyer's.
The feminine form of son-in-law is daughter-in-law.
The feminine form of "judge" is "judges."
The possessive form of the singular noun phrase is the lawyer's cases (the cases of the lawyer).The possessive form of the plural noun phrase is the lawyers' cases (the cases of the lawyers).
Testatrix is the feminine form of the word testator, the person who is giving property according to the provisions of the will-- the one who is creating the will. It is an infrequently used form. Aviatrix is an example, the feminine form of aviator. Mary the mother of Jesus is sometimes called the mediatrix of all grace in some religious traditions; mediatrix is feminine for mediator. I guess if we were still using this old form we would call a woman who is a senator a senatrix. Doesn't work very well.
The Spanish word, abogado, is the masculine form for lawyer or attorney in English. For a woman lawyer the Spanish word, abogada is the feminine form. The English translation stays the same.
The possessive form is lawyer's.
The feminine form of ami is amie. The feminine plural is amies.
This is the feminine form of Saint Yvo (Ivo), a great French lawyer called the "Advocate of the Poor." He is the patron saint of lawyers.
The feminine form of alumnus is alumna. The feminine plural is alumnae.
The feminine form of bajo is baja. The feminine plural is bajas.
Mistress is the feminine form of master. It is already in feminine form.
Baroness is the feminine form.
There is no separate word in English. Lawyer can mean male or female.
The feminine form of charmant is charmante. The feminine plural is charmantes.
The feminine form for host is "hostess."
The feminine form of benefactor is benefactress.