8 year old punishment? Too far?

[NotSoThinLizzy]

Just wondering before I start if this is going to far?

Basically all week she has been horrible hitting, biting, scratching and throwing things ect...I've tried the typical punishments e.g. take away tv time and grounding but nothing works. I've asked school if anything has happened at school but nothing she's been perfectly behaved only at home. Mostly when she can't get her own way.

Anyways I'm thinking of stripping her room of all toys, Xbox and t.v. and getting her to earn them back when she's good. Is it going to far?

The baby is almost certainly a factor.
The key thing is to go back to giving her attention for good behaviour, and catching as much of that as you can. You can give yourself a secret star chart with the aim of you catching her being "good" and praising/giving attention for it 10 times a day - start off with really easy ways to catch her being good to ensure you can do it.