What to except from family?

So I really just need to vent cause I have no one else to vent to. So firstly I’m married to a wonderful man with a wee 1.5 year old. So 2 weeks ago I found out my mum has malignant bowel cancer we are praaaaaising the lord it hasn’t spread and we’re just waiting on surgery to know what’s next. Anyway. I’m the eldest of 3 and I’ve basically held my family together since I was young as my mum and dad have always fought anyway since we all found out my dad hasn’t stopped crying ( I think mainly it’s guilt for the ways he’s treated my mum in the past) so he’s not a very good supporter system for my younger sisters and it’s taking a toll on them so I’m trying to stay positive for my own family. My husband has been supportive but doesn’t always know how to deal with emotions ANYWAY here’s the tea ☕️ my mother in law who is also “best friends” with my mum has shown next to no support from my mother and myself I haven’t received one text from her, when I see her she never asks if I’m okay and just doesn’t even really talk about it, but I also haven’t seen any support from all 4 of my brother in laws and my sister in law. Now we’re all quite close and see each other all the time. I’ve always had issues with my mother in law not liking me and me having no idea why when I haven’t done anything but love and SUPPORT the entire family especially when one of the brothers was going through a real tough stage in life and had no one to talk to cause he felt his mum didn’t care but I don’t understand why she’s always had a problem with me but that’s another story. It’s actually really getting me and really upsetting on top of everything else I’ve only had about 2 other friends ask me how I am every few days and that’s it. I just want to know, is it okay to have expectations from family when you’re going through a tough time and just dirt EXCEPT some sort of support?

P.s my husband doesn’t know what to say to his mum & I’ve heard from all of her side of the family and my father in laws to express their prayers and thoughts and they all said if I need someone to talk that their there for and I know they’re genuine too and they live in a different country but they can still offer support.

Sorry if this doesn’t make sense it’s like 2am and I’m exhausted but can’t sleep 😴