Thus... if a woman prophesies in the gathering... it is a form of preaching.
If a woman testifies in gatherings... it is a form of preaching.
If a woman offers any teaching in a gathering (even if primarily to the ladies) ... it is a form of preaching.
If a woman admonishes, exhorts, or rebukes (in any form or fashion) in a gathering... it is a form of preaching.
Therefore, it is incorrect to say that a woman isn't permitted to "preach" in gatherings.