hi. you must not go back to feeding in her bouncer, it's really not safe so don't give in. she may be testing you untill she gets what she wants so stick at what is right no matter how tough it is.
you could try the type of chairs that attach to a normal chair (they have no trays) so she can sit straight to the table with you. this may make her feel better. look on the net or in shops.
stick with forceing her into high chair untill you get one, if you decide to get one, otherwise your going to have real problems at dinner time. you've got to keep calm though, don't show any emotion, not even when she throws it back up. she could be doing that on purpose or simply getting so upset it comes back up. stick to every time she eats she goes in her high chair no matter what. you've got to show her your the boss and her tantrum wont make the slightest bit of difference. but stay calm!