Tonks definitely voted yes for all three, because obviously she knows them and their intentions all very well, especially her parents :P
She also supported another large-scale Wandless exodus. Obviously, Tonks cannot do as much physical/combative stuff for the Order right now, but if any plots could benefit from having a snoop, dispatcher, or even someone who could just easily drop things off to or from Diagon undetected, Tonks and her fake IDs are up for that, because honestly who's going to stop and question Mildred???
re: What to do with them after, Tonks would agree setting up some type of safe place is probably the best immediate solution, but that they should then continue to work with them to potentially get them out of the country, if they choose to leave, that way they can have an easier time restarting their lives, finding work and wands, etc. They could reach out to foreign sympathizers to help set up host families or sponsors. Tonks would definitely be willing to help liaison, write letters, etc.!