Fox squirrel having trouble eating walnut

[MapleRidgesquirrel]

One of my wild female fox squirrels came by today for a treat. I gave her an english walnut in the shell. I noticed she was having trouble biting in to it so I tossed her a pecan in the shell. She dropped the walnut and took the pecan. She was able to eat the pecan in the shell just fine. She looks healthy and a normal weight. I'm not sure how old she is but she has been coming by for 2 years on and off. She use to be able to eat english walnuts in the shell just fine. Does anyone know what could cause her to have trouble eating a shelled english walnut and if there is anything I can do to help her?

[Mel1959]

Can you get a look at her teeth? Some of my wilds will choose one type of in shell nut over another, if given the option, so maybe there’s nothing wrong with her.

[MapleRidgesquirrel]

She stays about an arms length away from me to get a nut still. I have to toss her nuts to her. I will try to get a good look at her teeth today. Thanks