It would depend on your mom,
I'd warn her, and see if she was up for it, but ease into it.
It would depend on your mom, and if you rolled into WOT on the highway or just bury the pedal from a dig and especially if she had heart issues or bad disc in her neck/back.
I'd warn her, and see if she was up for it, but ease into it. A few lighter pulls, and gauge her reaction/comfort, before burying the pedal.