One guy left his family ( he has 8 kids) he has tahribed to saudi arabia and took a loan and the bank is calling his parents to pay immediately.
My mums auntie ( grandmas sis), my mother always sends money monthy to her, she is living well.
My mothers second cousin he has 7 kids and isn't working ( but has money to chew) and lastly my mothers cousin from her dads side who has never called us in our life calls and salams us but he lowkey wants money so my mother feels bad and says she will send him $100 :/
MashaAllah may Allah reward your mother.
I would say so long as it does not hurt her, it is good to help her family members. If the guy takes his kids food money to buy khat, thats on him but 100 to 150 is reasonable.
There's two principles that are in tension but must be balanced.
The first is that only Allah (SWT) can suffice the haajjat (affairs) of all people so you should not sacrifice your well being to satisfy people. Only a few of Allah's servants can reach that maqam.
The second is that you should help people unless you know you're directly facilitating haram. Even if someone from back home says they want 20 fod their childs birthday, it might not be a necessity but it's a form of khair because youre creating happiness for human beings and youd appreciate the same being done.
1000 is a lot but it sounds about right for supporting 3 families back home. If it doesnt hurt your mom, then she should continue. That will ensure that inshaAllah you are always blessed. If its difficult, she can just cut back on the amount