My 6 year old daughter's behaviour seems to have regressed since I had another baby in December. She loses her temper very quickly over the smallest things and is extremely rude and disrespectful to me and my partner. After the incident she is usually very upset and remorseful. We have explained why her behaviour is unacceptable and discipline her with timeouts and removing priveleges but it doesn't seem to stop it happening again. Is this just a phase while she gets used to the new baby or do we need to try another discipling technique?