Help with my redundancy?

my mum is being made redundent in april after 10years of being employed with the same company.we know that she is entitled to 1half weeks pay per year of employment,but the company said it wont count the first 2years of employment,she is also supposed to get 10weeks notice of redundancy will she get paid extra coz shes only had 4 weeks notice?also she is also owed 20hours toil should she be paid for that?sorry for all the questons just need some advice for her.