Verified answer

No, שנסלח is probably a machine translation, meaning "that has been forgiven (male)".

For a girl to say "Lord has forgave me of my sin", you must use two words - נמחל לי, pronounced neem-KHAL lee

[BTW, In this case, it is the same also for a boy, but it was good of you to specify the gender, because Hebrew is usually a very gender-specific language]

Another possibility is נישא עווני (nisa avoni), or נישאו חטאותיי, etc.

Of course, that's an oxymoron: One who brags about his cleanliness isn't bereft of sins. If you tattoo this on yourself, you'll be constantly baiting your deity.

Yes thats right.