Garage sale?

i'm having a garage sale 2day wit my friend and last nite i called my friend 2 talk 2 her more about the garage sale and she told me that we would giv the money 2 charity and she didn't ask me what i thought about it and in my head i was like WHAT!? i don't want 2 sound greedy but i really don't want 2 giv the money 2 charity. also, there's this family that goes 2 our church and they're from africa and don't hav a lot of money and they hav 7 girls and 3 of them r close 2 my age so i've given them lots of my stuff like cloths, toys, etc. and we've really helped them and now i want 2 get some money from selling some of my stuff @ a garage sale. i was planning on putting the money i got in my savings account cuz there r some things that i want that cost a lot and i was going 2 sav up for them. i mean, i guess i would b ok wit giving half of the money 2 charity but not all of it. so could u plz tell me how 2 tell her how i feel and what 2 say and how 2 deal wit this?