Does the Kindle Fire have a cover? If not then buy a nice one for her and take that on the day. You can gently remind her the KF was from you and the cover will protect it against being dropped etc.
I can tell your feeling fragile because of your DH's illness and regular hospitalisation. Why don't you tell your DH how you feel and ask him not to add to your stress by making an issue if this. What's done is done.
Wrong side driving social media stunt
Energy Firms Want Government To Step In Over Winter Bills.....


. If I were you I'd be hopping mad - just not acceptable behaviour and I hope DD is clear on this point
