The advice offered by Elena is not good advice, and is a misinterpretation of recent changes to disfellowshipping. There is no evidence that it is 'as simple as just saying sorry'. This is especially the case if you raise requestions about JW doctrines, which could have them label you as an 'apostate'. But even aside from that, your 'repentance' would also be based on whether you continue the relationship with the 'worldly' person.
It is also not the case that there is only 'soft shunning' for disfellowshipped individuals (and no change indicated for any who disassociate or are deemed by the elders to have 'disassociated by their actions'), unless you consider communication limited to inviting you to the meeting or to greet you at the meeting to be normal social interaction.