Consideration for the Princess Mary is thought to have been one of Jane's uppermost [concerns] as she moved into her role as consort, but whether it was simply political or indeed sincere is another question. She apparently approached the subject with Henry just prior to Anne's arrest: 'Mistress Semel [...] suggested that the princess should be placed in her former position; and the king told her she was a fool, and ought to  solicit the advancement of the children they would have between them, and not any others. She replied that in asking for the restoration of the Princess she conceived she was seeking the rest and tranquility of the king, herself, her future children and the whole realm; for, without that, neither [Charles V] nor [the English] people would ever be content.' Her concern for Mary may [well] have been genuine, but her timing was impeccable. She safely voiced her concern surrounded by her family and friends at court who opposed the Boleyns. What is interesting in this exchange is the speculation of Jane's motives, combined with the king's reaction: he defined the role he expected her to fit into, in this case, he gave clear indication that she should concern herself with the business of the children she would have with him, not any other. Politics aside, she was expected to produce an heir and focus her attention on the dynastic issue of her future family. At the very least, Henry had convinced himself that there would be children between them and sought to remove her from any central political role to that of consort and mother. Jane was a hope for the future, but Henry set out immediately placing a definition on where her concerns should be and what his expectations obviously were.

Jane, The Quene (Pamela M. Gross)