It’s a controversial opinion I know, but I believe her age when she made these terrible choices should be a consideration. Not to exonerate or excuse her actions, but to explain them and provide a marginal degree of context.
On the basis that she doesn’t have Bangladeshi citizenship, I think revoking her citizenship is a ridiculous idea btw. Absolutely preposterous.
She needs to be punished, severely so, but if she’s prepared to face that, and deal with the consequences of her actions, then she should be allowed back imo.