Distraught (2,5)
'distraught' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for beside oneself that I've seen before include "Irrational, eg with worry" , "Distraught" , "Overcome with worry" , "Lost control, distracted" , "mad" .)
(Other definitions for in tears that I've seen before include "Maudlin" , "Crying" , "Very unhappy" , "Weeping" , "sadly" .)