Yes, she did. But that's all it is at this point, an allegation.
2. She had DNA evidence
Yes, DNA evidence of what Bryant already admitted. They had sex.
3. There was enough "collateral damage" to file charges
"Collateral damage" that has not been shown because there has yet to be a trial. That "collateral evidence" could be very damning for Bryant. But it could also be specious. There's no way to know until it is shown.
Next?
For your information these are enough to file charges.