Thanks Nelie and Cathy for your responses.
My mother went to see her ENT today who did the surgery.
He looked in her mouth and said that she has an infection on her tongue. Fungal infection thrush.
My father told me he was very shocked to see it and said this looks bad and we need to get it cleared up. Gave her a swish and swallow and oral antifungal pill to take. He wants her to come back next week.

The infection is on the opposite side of the surgery(graft) side. It's more toward the back of her tongue.
Maybe this is why her tongue has been bothering her and she's been having a hard time taking some PO pills.
She was on steroids a few weeks back.
My sister suggested speech therapy to him and told him she is not eating real well and that she has a hard time speaking and he basically said that we need to get this infection cleard up first.
He said if it does not seem better in a few days to call his office.
I'm thinking what if it does not clear up what is he going to do, put her in the hospital???

Has anybody else experienced having this infection and any suggestions on how to prevent it from occuring again.

Thanks
Michelle