My phone is now completely fixed from Low On Space.
I had to root the phone, and I wasn't knowledgeable enough to do it on my own, but someone walked me through it. I just installed the "Fix" patch (if that's the correct term) and I'm all set!
Here is the thread where someone was kind enough to walk me through it, if anyone would care to attempt doing the same.
Teaching Gramma to root her incredible
The last file increased my data/data cache substantially.