Maybe call back during your lunch time and keep the conversation only concerning S14. If she veers off topic "Oh I need to go my lunch is almost over." or something. Not cold or mean just gotta get to something else.
Me 41 W 33 M 2013 Suspect A 11/15 Confirm A 1/16 She moved out 2/14/16 Stepson 13 Stepson 16