Bath nightmare - help!!

If you make sure there are lots of bubbles and toys in the bath and if you stay calm and relaxed soon enough the urge to get in and play will over come her upset at the broken toy. Also by screaming at the bath she has learnt that she gets to shower with mum which she loves and proberbly doesn't want to give up. So if you stop taking her in the shower with you , she'll work out that screaming at the bath doesn't get a reward and she'll soon be back in the bath playing amongst the bubbles.