My advice is firstly, if it is an off leash area then the responsibility is on her to ensure she only takes dogs that are not aggressive and can be controlled while off leash. So no you did not do the wrong thing. Secondly I would consider taking your poodle to the vet as dogs can do a lot of damage to underlying tissue even if the skin isn't punctured. Thirdly make sure your dog gets a lot of good playtime with other dogs soon so she doesn't over react to this one incident and become fearful or aggressive. She sounds like an awful woman.