Lookup command sent via email fails when sent via Twitter

I have a contact in my list called "Chincoteague Island Vacations." I sent the following instruction via email:
l chincoteague contacts
and Sandy returned an email with the contact information I wanted. In other words, it worked perfectly.

Then, just to make sure I could get the same information via mobile if necessary, I used Twitter to DM Sandy with the exact same text. It didn't work. I got the standard "does not compute" response ("Hello! To remember/remind: 'd s r take a break in 15 min'; To update: 'd s u 1 @done'; For more: iwantsandy.com/examples").

Shouldn't the responses to lookups (and to everything) be the same whether one uses email or Twitter?
 
sad I’m frustrated and wigged out
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