The Collaborative International Dictionary of English v.0.48:

Tender-hearted \Ten"der-heart`ed\, a.
   Having great sensibility; susceptible of impressions or
   influence; affectionate; pitying; sensitive. --
   Ten"der-heart`ed*ly, adv. -- Ten"der-heart`ed*ness, n.
   [1913 Webster]

         Rehoboam was young and tender-hearted, and could not
         withstand them.                          --2 Chron.
                                                  xiii. 7.
   [1913 Webster]

         Be ye kind one to another, tender-hearted. --Eph. iv.
                                                  32.
   [1913 Webster]

WordNet (r) 3.0 (2006):

tenderheartedness
    n 1: warm compassionate feelings [syn: tenderness,
         tenderheartedness]