Could be what we call fire Ants in the US I have had them they are really painful,and you can go into shock from the
bites,, sounds like she may be on the mend now, if the
bites have dried up she will start to feel better ,and will get cooler soon.If she is still feeling hot it maybe a fever so it would be best for her to see a Doctor again, Good luck let us know how she is doing.