How to Modify Scrabble to Make It Safer for Nana to Play

My Nana won't play the game scrabble with us anymore because she doesn't want to feel pressured to use an unpleasant or dirty word out of desperation slash lack of other options. Is there a way to modify scrabble to make it safe for her to play so she doesn't have to spell a word she doesn't wants to? I was thinking of either removing the PF, V, B, T, C, and D tiles or adding in a lot of the other letters from other sets of the game. Does anyone have any other suggestions updated two weeks ago? We don't allow dirty words, but if it is the only option left, Nana feels like she is