Dont do it... here is why...
She might be a nice professional woman... But things in life happen, people lose jobs, and fortunes. When a person is down and out, sometimes they will do desperate things to get themselves back up... including sueing you for liablity... You can sign all the paperwork you want, but people can sue you for anything, at any time it seems anymore. Sure she might lose... but you know what they say, the real winners in the end.... The lawyers... even if you win, you stand to lose money...
besides... holding the door open for someone... that's helping... Helping someone with car problems... thats helping... Helping someone move... that's helping...
Providing your seed for someone else... That's way above and beyond the call of duty bud.
Just remember, the courts are ALLWAYS trying to assign liablity for the children...
I remember reading several years ago about a person that swore up and down it was not possible that this child was his. For several years of going through the courts, and finally having a DNA test done. They determined that the child was indeed not his... Guess what... he's still paying for child support, he's established himself as an income source for that child...
The court isn't interested in the mistakes of the adults it seems, just the welfare of the children