V.M.
Temper tantrums are traumatic - for you at least. They do outgrow them, faster if you DO NOT GIVE IN!!! Calmly remove the child from the situation. At home, put her in her room, at the store, remove her to her carseat - then (this is the hard part) LET HER YELL. If you do not give in and can remain calm, let her anger play out - then calmly as her if she is now ready to behave. When she says yes (she will eventually) go back to what you were doing when the tantrum started. The in-store tantrums will cease almost immediately if you just calmly remove her, place her in her car seat and wait like you've got nothing better to do. (I kept a magazine in the car for just such occasions). If it helps you or gives you something to look forward to, my "tantrum babies" are now 16 and 10 and both behave beautifully in public. Good luck and STAY CALM. This too shall be funny some day.