Is it ok for the military to cover up what happens to rape victims?

This is Private First Class LaVena Johnson of Missouri. An honors student who nonetheless didn't quite know what she wanted to do with her life, she enlisted in the Army right out of high school in 2003 and was sent to Iraq, where she died. When the Army returned her mutilated body to her grieving parents as a suicide, her dad, Dr. John Johnson, said to himself and the Army coroner, "Somebody murdered my daughter and you picked the wrong person to fuck with." Fucking right.

When LaVena's father finally brought himself to look at his daughter's corpse in 2005, sent home from Iraq with a report that she'd committed suicide by shooting herself in the left side of her head with an M-16 - which, by the way, is not a handgun but a relatively long rifle, he thought there was something wrong.

Private LaVena Johnson's nose was broken, teeth were loose, one eye was concave and there were abrasions over her body. The supposed M-16 hole to the head was far too small for the revolver-sized exit wound, and was on the wrong side of her skull for a right-handed woman to have pulled the trigger. Her genital area showed evidence of acid, perhaps used to destroy DNA evidence. She had white military gloves glued to her burned hands.

Since then, the Army has continued to insist that the LaVena committed suicide by pointing her rifle with her non-dominant hand at the side of her head and set herself on fire, all after she beat herself up and poured acid on her genitals (since their was no apparent investigation into whatever happened there). Oh, and there was a trail of blood leading away from the tent where her body was found.

Her father has been trying for nearly 3 years to get someone - including Congress - to investigate the death of his daughter, which he feels was a cover-up or conspiracy in the manner of Pat Tillman. Of course, he's trying to get people to pay attention to his African-American daughter's "suicide" and not the friendly-fire death of a white male NFL player, which is probably part of the problem. Lara Battles, spokesperson for the House Armed Services Committee, told KMOV, "At this time the House Armed Services Committee is looking into Private Johnson's case, but no decisions have been made for a formal investigation."