there shouldn't be any problems, other than shit's e may feel like shit when it's over. I'm not sure of the reaction with the sodium citrate, but I don't believe there will be any problems.
Just make she drinks enough water before she goes...
LOL.....you know your broke beyond belief when your donating plasma. When your in college its a great way to get beer money on friday, then you only need to drink 3 beers to get drunk.