If my mare turns out to be bred by her own baby will it have problems?

He is at the trainers and gotten cut. I have been very very ill this last year and wasn't able to devote the attention to them as I would have normally. I was in and out of the hospital and seeing specialists constantly and on meds and having seizures ETC. It was a rough time for me. So I wasn't intentionally ignoring the possibility of him breeding with her.I never actually saw her breed with him. But as I stated i was very ill and it still could have happened while we were on the waiting list for him to go to the trainers. She is not even showing so this is hypothetical at this point. But just in case I wanted some input. My mare is a registered palomino quarter horse. Her entire line is inbred intentionally but not even close to mother and son. I would not have even remotely allowed this to happen intentionally. I hope she is not bred, but if she is I would want to keep it and take care of it. Hoping it wouldn't be deformed in any way. Does anyone have any experiences/advice in these type of situations? Oh and please dont lecture me on how irresponsiable it was not to have him cut sooner. I have already beat myself up over it enough and sometimes life just doesnt go to plan. Thanks again!