Not knowing what to do.

I've been at my Gran's house all day today because she bought a tablet computer thing, so I've been showing her how to use it. However, whilst my mum and Gran went to the shops and I was left to set it up, the doorbell went (by the way setting it up took me HOURS - I could not connect to the WiFi and was searching online for ages on what to do. Turns out I entered the wrong password over and over again, ha! Oooops...). So anyway, I obviously went to answer the door. 

It was the old lady from next door. She lives alone with her slightly weird husband... and she has dementia. My Gran has told me she's been round in the past (after she somehow got out her house - her carers have told her husband to lock the doors when he can't watch her) and she has chatted complete shit to my Gran and my Gran then obviously doesn't know what to do with her. She can't walk the lady back to her house because she (my Gran) is disabled and my Mum has told her not to let the old lady in, because apparently people with conditions like dementia can turn violent. 

So when I answered the door and saw her standing there holding an old football, I had no fucking clue what to do. This was the conversation (roughly)... 

 "Hi Margret.. is everything ok?" 

 "No. Can you see that? Five and Six." (She points down towards my Gran's backgarden - I can't really see anything, so I presume the other next door neighbour's kids are in the garden and she's talking about them.) 

"Oh... Yeah..." 

"Well I want some (serious case of mumbling now happens). I want to speak to your mum." 

 "Sorry, I'm the only one in at the moment, can I help you with anything?" (I now seriously start panicking because I can't take her back to her house because I don't have the keys to lock the door.) 

"Oh. Ok. (She now looks down towards the backgarden again.) I want some of those." (I presume she is on about some flowers growing up the fence.) 

"Yeah, they're pretty. Is everything ok?" 

"Yes. I just don't know what to do with this (now looking at the football she is holding). It's very dirty and needs throwing away." 

"Oh, well do you want me to take it then?" 

"No. It's dirty." 

"Ok... Does Harry know you're here?" 

"YES! (Very happy now) He is WONDERFUL!" (She now starts walking away.) 

"Yeah he is... Do you need any help getting back? (Why the fuck I asked that because I would have to leave the front door open... and I wouldn't be able to keep an eye on it from Margret's house because the front doors are at the sides of the houses, not actually the front, and my Gran's and Margret's houses are connected, so the doors are complete opposite sides - confused? Me too.) 

"No he is wonderful." (She now leaves.) 

I then run to the front room and watch her go back to her house. I know this sounds like nothing to get stressed over but I just had no idea what to do because she's not meant to leave her house without having someone with her. When my Mum and Gran were back, we then saw her taking the football to the house with the kids. So then my Mum had to go out and walk her back home and tell her husband to keep an eye on her! 

Anyone else been in a situation like this?! What did you do?

And hope you are all enjoying the Jubilee weekend!
I'm making my own crown tomorrow ha. Such a child.

Jazz