420, is that note about touching your own penis one of those "well, if you did, there's a chance..." Kinda things in that it's technically possible but also pretty low risk?
The chances are very low, maybe impossible if you didn't then touch your penis after you fingered her. You should not worry about this. Average time to appear is 2-8 months but not everyone who is infected gets warts. Especially if she had the high risk strains that do not produce warts.