I'm so glad you checked and saw nothing on her tounge...ever since my sister-n-law's cat died from a tounge ulcer.(it scared me so much...the poor girl was so soar)..i have the vets check their tounges every visit.
the tech holds them(their head),and the vet does a quick (very quick)look by holding the tip and looking under it...it happens so fast the cat doesn't have time to get upset
and a lot of times she just left her mouth open without the tounge hanging out...toward the end though.she was an old cat but it happends to young ones to.