What has happened to my mum?

my mum has changed drastically these past few years.

Suddenly she has become obsessed with work and leaves home at 7am and gets back at 10pm. Some days her shifts vary but those are the normal times she works. My dad works till 7pm so my nanny has been like a mum and dad to me and I'm scared to lose her.

In a way (i feel really bad that I feel this way) i prefer it when she works because when she is at home she is taking phone calls and dragging all her stress into our home. She gets so angry over little things and she isn't there to back me up when I need her. Also when she is at home for 80% of the time she is watching her Thai tv on the iPad.

Also she always says that we have no money so that's why she has to work but then she spends all her money on designer bags, clothes and makeup. We have money but she wastes it on stuff like that instead of buying useful resources for our family like a new shower or paying of her debt.

She also seems quite expressive about what she thinks. She won't consider what she says first. For example once she said that my sister and I aren't going to be successful and when we got offended she said it was a 'joke' and got really moody and went upstairs for the rest of the evening.

She is slowly tearing apart our family and my dad is getting fed up of it all. For some reason she always says 'we will be getting divorced soon but not now so keep trying in school' to me and my twin.

i just want my mum back.

Thanks for any answers :)