Mayella Ewell: Had Tom ever come inside the Ewell’s fence before?

Yes, Tom had been inside the Ewell's fence.

“Why, yes suh, I’d tip m’hat when I’d go by, and one day she asked me to come inside the fence and bust up a chiffarobe for her.”
“When did she ask you to chop up the—the chiffarobe?”
“Mr. Finch, it was way last spring. I remember it because it was choppin‘ time and I had my hoe with me. I said I didn’t have nothin’ but this hoe, but she said she had a hatchet. She give me the hatchet and I broke up the chiffarobe.

Tom Robinson’s forehead relaxed. “She’d call me in, suh. Seemed like every time I passed by yonder she’d have some little somethin‘ for me to do—choppin’ kindlin‘, totin’ water for her. She watered them red flowers every day—”