In Between

Hidden between life and death
The thing you seek lay in stagnant breath
Lay a hand in water where no ripple shall pass
There you shall find the lady so chaste
The key you seek lies in satin
Beware the script written from latin
Do not disturb those that slumber
Or death do so encumber
♠ ♠ ♠
Just a random riddle I came up in math class. Hope you guys get it and if you want to you can guess what it means.
NOTE:
If you cannot read between the lines and wish to find out, please feel free to email me