^ ^ ^
She might have felt guilty, she might have learnt her lesson, but there is no point in crying over split milk.
What is the use to cry now and try and commit suicide? When she had the chance to show love, caring etc she should have.
Now that you've taken the legal course, ie filed for divorce and she now has taken a drastic step of trying to kill herself, you have a vaiild point not to cohabit with her, your divorce case has become much more stonger now.
She has got suicidal tendencies and you can as well convince the court that you cannot live with a person who has got suicidal tendency.
Beware, if you still are keeping in touch with your ex-wife, such actions will prove to be detrimental.
Restrain from any type of contact via phone, email, word of mouth etc with your ex, or else you might end up in jail, as there could be another angle to it, a criminal one.