What to do if u feel ur mom doesnt care>?

Ok i feel as if my mom doesnt care about me cuz like 2day i ask if i could go wit her 2 the store and instead she told me no and ask my lil sis whos 13 2 go wit her Me and my mom has nvr really gotten along very well But now tht i am almost 16 i want her in my life but she seems she doesnt want to be in it Everytime i try to be nice and do something good for her she juss pushes me away and i really want her 2 be in my life soo wat do i do about this???? I have already tlk 2 my dad bout it and he said tht he will tlk 2 her well 2nite he told her tht she needs 2 spend more time wit me and she then goes" ohh i need 2 spend more time wit kammie ok then" and then she sticks her bottom lip out and the way she said it was in her sarcastic way UGHHHH!!!! she is really starten to annoy me but i really reallly want her to be in my life and spend time wit me but she seems like she doesnt want me in her life!!! See i was goin to make her favorite cookies 4 her tht way she may be happy and proud of me 4 once So i got hershey kisses and was gonna put them ontop of the cookies but my sisters Kasey whos 17 and my other sis whos 13 decides 2 eat them after i told them nott to!!! And i am like i was gonna make her cookies thx alot then my mom started eatin the kisses and was like who cares they can eat them i am like well i was gonna make you cookies and she juss like why>??? She doesnt care and doesnt seem 2 wanna be part of my life so wat do i do??