You dipstuff. 100% right.
Your graphics card manages all the GUIs and displays of your computer.
Go back to the kitchen woman.
She actually is right.
90% of motherboards have a basic graphics card built in these days.
By basic i mean they can run your internet explorer and crap..
When i say having a graphics card i mean a actual one
She's just speaking womanese
Jess is correct. Assuming OP's computer has an integrated graphics chip which are built into the motherboard and OP actually doesn't have a graphics card.
Most motherboards of the past 5 years have integrated cards. Some don't because it is assumed that the user will buy graphics with it.
For instance my motherboard, a Gigabyte EP43-DS3L, does not have an integrated card because the manufacturer assumes that the user buying it will buy their own GPU for it.
Most home/office prebuilts have integrated chips because they are built for basic computing, not gaming or anything 3D at all. People buy this for their office/home needs and then when its old they hand it down to the children who try to play Crysis on it.