I can understand your resentment. My mom raised my siblings and I
single-handedly..She used to be very bent on developing my talents
when we were still well-off. She suddenly sent me overseas to study
when I was 16. A year into my studies, she started having probs
wiring money over. I couldn't even buy clothes for winter. She
wouldn't explain anything to me.
To my utter shock one day, I discovered that both my parents'
mobile phone numbers were out of service. Even the house phone had
been cut. Soon after, they stopped sending money. I was left
stranded alone in Australia with no way to contact them. I didn't
have any other relatives' numbers on me, and I didn't know how to
tell my friends.
I found a decent job as a waitress, scrimped and saved, but it
wouldn't cover all my expenses. After 6 mths of this, I got a call
from my mom. She told me everything would be ok, that I couldn't
give up hope. I so very much wanted to believe her.
During the last year of my stay there, I stayed with kind friends.
But the money never came. When I got sick of freeloading, I went to
live in the backseat of an old car parked beside a field of horses
for a few mths (if I needed to shower I sneaked into backpacker
hotels or used public baths by the beach). I finally admitted
defeat when I received another call from my mom - she gave me her
new ctc number - and then I got my school to cancel my visa. Then,
I was 19 going on 20.
I thought my nightmare was over, so I never saw this coming. We had
moved from fully-paid landed property to a small HDB flat. My dad
had sabotaged my mom's business and she had been declared bankrupt
and forced to wind up. No more cars, no domestic helpers, office
furniture made our new HDB flat look like storage. My mom had lost
a shocking amt of weight. She explained that she didn't tell me any
of this to "protect me".. that upset me even more because I didn't
understand at the time. I couldn't take it, I moved out.
I only recently found it within myself to forgive her and rebuild
my relationship with her. I forgave my dad as well but kept my
distance. My mom wants to write a book about our family
"adventures" soon, and I will translate it for her. It's not good
to hang onto these negative emotions because it stops you from
going forward. 
That, and not your mom, is the only
thing that can really stop you from realising your full potential.
(That's what I realised eventually). I hope you can move on too,
sometime in the near future. All da best.
