If this home was built in 2005 and does not have GFCI at all counter spaces in the kitchen and does not have GFCI in the master bathroom beside the sink then you got some major AHJ sleeping at the wheel down in Florida.
All recepts on the kitchen counter MUST be GFCI protected, All receptacles in the bathroom must be GFCI protected…sink recept. most certainly…Did you try to trip the standard recept. beside the sink…with a SureTest…because just being a standard receptacle does not mean it is not GFCI protected…same for the ones beside the stove…so I just wanted to make sure you tried to TRIP them…or tested them AFTER you tripped the ones that WERE present in the kitchen.
On your last question…YES, as long as the regular outlet is downstream of the GFCI 6-8’ away…and when you PHYSICALLY test the GFCI you should make sure it also kills power to that regular recept near the water supply as you stated…if it does then it is fine…
Remember GFCI’s receptacles protect all receptacles installed downstream of it ( IF INSTALLED CORRECTLY )…so they all would be protected by the first GFCI.
Hope this helps