In my lectures and class discussions (and out of class, for that matter), I tend to use a universal female pronoun. Not in cases where a universal is inappropriate because it conflicts with specific facts, obviously — “Mr. Jones went to the bank and she deposited her check.” But in cases where a universal pronoun is used, and where traditional English would therefore call for a “he,” I tend to use “she.” (Ditto for “her,” “hers,” and so forth). Thus, “for a testator to execute a will, she has to meet the following requirements.”
This is normally not much of a problem. Substituting she for he is not exactly rocket science.