Default Resizing SD Card Paritions

I'm sorry if this is the wrong forum but it seemed the most appropriate (I thought).

I recently got an LG Optimus F6 and it has a horrible memory file system. To make a long story short, I had to downgrade firmware, root,ota root keep, upgrade firmware, unmount sd card, then partition it.

So I've got a 32g SD card that has the first partition FAT32 with about 4g, and the second partition is EXT4 with the other 28. I want a want a way to move space from the EXT4 over to the FAT32 (format just that data if I have to, and then merge it with FAT 32 drive).

I don't want to use AParted because I think it will wipe the partitions, and mini partitions tools doesn't recognize the partitions when I plug my phone into computer, and I don't have a working SD Card Reader which is what I would need to get the SD Cards to read on PC, unless theres some terminala or ADB script that could do that, since I've figured out the physical adress of the diffefrent SD cards