being she has frequently said one thing to someones face and then another elsewhere it is hard to take an apology from her all that seriously. it's great that you have faith in her and all but i can't take her owning up to a circle of friends who have attacked people on her behalf as well as frequently encouraged and enabled her bad behavior as growing or maturing.

in this case, a genuine no excuses public owning up would go a long way considering she has caused a lot of trouble in her not so distant past. or hell, getting off her ass and approaching people she knows she has given hell would mean a lot more than suggesting they should come to her. something to consider.

i can only assume you are a friend of hers too being as you're trying (patiently, which i personally appreciate) to defend her, but i honestly encourage you to encourage her to do the right thing in this case which is not hide an apology behind closed doors but take real responsibility for what she's done. if she's truly growing beyond what she's done in the past, that would be the biggest step forward.