Inactive endometrium with tubal metaplasia and ?stromal breakdown.  The clear cells are peg cells in tubal metaplasia.  Some cells show cilia.  I don't see miotoses in glands or stroma, cannot call it proliferative.  No cytoplasmic secretory vacuoles---not early secretory phase; glands are small and tubular without abundan luminal secretion and no stromal edema---not mid secretroy; no spiral arterieoles and stroma not predecidualized---not late secretory.  Secretory phase has distinct morphologic features depending on which day(s) of the secretory phase (also called luteal phase, post-ovulatory phase)

This kind of endometrium is common in perimanopausal women.  Tubal metaplasia is usually caused by persistent estrogen stimulation, she probably hasn't ovulated for more than a cycle.