Her ex-boyfriend Darryl, who she lived with for 4 years said onthe stand the he and Arias had anal sex.
Seems to me she was "sodomized like a wild animal" before she even met Travis.
May "girls" are used for sex, thinking having sex with the "user" will lead to the "permanent" relationship.
The entry in her diary, her personal diary (Dear Self) said something to effect about how they fulfilled their fantasies (sorry I am too lazy right now to link the entry showed in court). And let's not forget the taped "phone sex". She was very obviously enjoying the phone sex and a very willing participant and, in fact, found the "debasing" enjoyable.
I've thought about it and find that, IMO, nope this girl was not used and sodomized like a wild animal. She was willing to be used and sodomized.