How would I find someone?

I don't think it's a good idea to just go looking for her, because she could be anywhere ! Even if your mum might be angry to hear this, say you just want to meet her ! She's your nan of course and shes old so she might need help and support. You can't just forget about her like that ! ? Persuade your mum that you want to meet your Nan ! Hope it Helps :)