Hi there ... sorry to hear your mums diagnosis, it sure is confusing when you don’t know much and it’s a bit like getting lost in a maze and not sure where to turn ... I’m sorry but none of us can give you a time frame ... even drs usually can only give rough estimates as everyone’s different ... so you need to have a gentle conversation with your mum and maybe you could go with her to her appointments, so things may be a little clearer ... just make the most of every day no matter how long ... may help to tell her you will listen if she wants to talk ... and she may open up ... 

pits the same when you loose someone close... everyone greaves differently ... some can cope quite well, other’s it takes a lot longer ... but all seem to go through so many emotions... it all part of loosing someone you love ... but there’s always a free phone number on here and McMillan too... you can talk to a trained nurse ... they help everyone who needs help. I used it when I was feeling a bit lost and confused and it sure helped me ... 

so sending you a big hug ... Chrisie xx