Mocking Shilpa's accent isn't racist. Who said that was a racist comment? Therefore, Shilpa's imitation of Jade obviously wasn't racist either. I do stuff like that all the time.
No, it’s moreso bullying, as was ‘She’s a dog.’ But the snide racist comments that HAVE been made are plentiful in my eyes, e.g. ‘Put it in Shilpa’s curry’, ‘They undercook their chicken’, ‘They eat with their hands…dunno where her fingers have been’, ‘That’s why Indian women are so thin, they all get ill’, the stuff with the bleach – just to name a few off the top of my head…