GPT
A saddle in her mind becomes a bucking force inside the speaker, where time turns into an hourglass and life is recognized through the eye already lost.
The woman or horse remains unresolved, which gives the saddle image both erotic and physical force. Bucking in the nose and filling the mind makes thought feel ridden rather than controlled. The lost eye gives recognition a cost, as though vision now depends on damage.
Claude
'A saddle In Her Mind': short bucking lyric, hourglass as sands of time, and recognizing life 'through the ye I have lost.' The pun on eye/ye is load-bearing.