Some quick research on the web turned up this fact:
Most SSDI recipients receive between $300 and $2,200. The average SSDI payment in 2012 is $1,111.
Source: http://www.disabilitysecrets.com/how-much-in-ssd.html
Based on this woman’s income given in the email she would not make anywhere near $1000.00 in SSDI. If we assume she is 30 years old she would make about $80.00 per month.
SSA has a benefits calculator which can be used to estimate your retirement or disability benefits.
Correction to my previous reply, that should be $800.00 not $80.00