Keil & Delitzsch, on Judg 19:3

“And her husband followed her, willing to be reconciled with her, and to speak kindly to her, and to bring her back with him, having with him a servant and two asses: and she received him, and brought him into her father’s house. And when his father in law had heard this, and had seen him, he met him with joy,”

“Some time afterwards, namely at the end of four months (הדשׁים ארבּעה is in apposition to ימים, and defines more precisely the ימים, or days), her husband went after her, "to speak to her to the heart," i.e., to talk to her in a friendly manner (see Gen 34:3), and to reconcile her to himself again, so that she might return; taking with him his attendant and a couple of asses, for himself and his wife to ride upon. The suffix attached to להשׁיבו refers to לבּה, "to bring back her heart," to turn her to himself again. The Keri השׁיבהּ is a needless conjecture. "And she brought him into her father's house, and her father received his son-in-law with joy, and constrained him (יהזק־בּו, lit. held him fast) to remain there three days." It is evident from this that the Levite had succeeded in reconciling his wife.”

Imported from an open dataset — not yet checked against the printed edition.