grannyqueenie my cat Tara does not lift her tail outdoors- that madam comes home to use her litter tray!
It sounds to me as though your oldest grandchild is desperately in need of help.
I agree re the scooter, it does not appear to be the right safe "toy" for that age group. Yes, what do you know- you are only jealous that you did not have one at her age or even now!!!
Retiring and living frugally in money from downsizing after years of stress







