Why did they find only her skull, feet and palms?
Rashi citing Pirkei d'R. Eliezer 17: She used to dance in front of Chasanim with her hands and feet, and shake her head. 1 Therefore, these merited burial.
Why was she rewarded for this? Women may not dance in front of men! (PF) Radak cites the Midrash to say that she did so in front of brides. (Our text of the Midrash says that she played cymbals with her hands in front of the Chasan, praised with her mouth and walked 10 steps; she also used these limbs to accompany and honor Mesim being taken to burial). "Ha'Semechim Eli Gil Yasisu Ki Yimtze'u Kaver" (Iyov 3:22) hints to this.
Did they bury what remained from her?
Radak: They did not bury it, since most of her body was eaten. This was like the Nevu'ah "v'Ein Kover" (verse 10).
Radak: According to the Midrash (refer to 9:35:1:1), they buried them. It says "v'Ein Kover" (verse 10) because most of her body was not buried.
