Announcing to my nanny who has dementia, need some advice😩

I’m 24, expecting my first baby, I’m also my nans youngest grandchild. I really want to tell her, but she has really bad dementia, and majority of the time now she doesn’t actually know who I am. So I feel as if telling her while I have virtually no bump would be major pointless because I don’t think she’d understand.

However, at some point I do want to tell her, despite my parents being all like “there’s no point because she won’t remember” she’s my dad’s mum & he’s never been very good at dealing with the situation of his mum having dementia.

Anyway, I’ve been racking my brains, tryna think of a way I could tell her, or maybe buy her something she could keep.

We’re booking a 3D scan, when we’re around 24 weeks, and while discussing the packages with the lady on the phone, she mentioned that they do “heart beat bears” so they put our babies heart beat into the teddy bear. And I thought that would be perfect to give my nan, although she maybe won’t remember who’s heart beat it is, she will always have it by her side.

I mentioned it to my dad who was all like it’s a waste of money & a waste of time telling her because she won’t remember. It hurts him and that’s his way of dealing it, I understand that.

But what do I do? Do I tell her and do what makes me happy and potentially my Nan happy? Or do I not tell her and make your dad happy. Also do you think the heart beat bear would be a reasonable thing to buy her?