MQS Wass Henry VIII great granddaughter and elizabeths second cousin she was catholic and had a legitimate claim to the throne she was married to the French king Francis second and inherited the Scottish crown when she was 6 days old while Mary was in France her mother Mary of guise ruled Scotland
Mary was catholic which meant many catholics including members of the nobility would support her claim to the throne
MQS claim was strengthened by the fact that there were no concerns about her legitimacy
Anne Boleyns marriage to Henry VIII was seen as invalid by catholics as the divorce between henry VIII and Catherine of Aragon was not condemned by the pope
Mary was always the centre pop the catholic plots to overthrow Elizabeth
on the death of Francis II in 1560 Mary returned to Scotland and married Henry Stuart (lord Darnley) producing and heir James Darnley was subsequently murdered
after Darnleys death Mary then married the earl of Bothwell
in 1568 the protestant Scottish lords rebelled against her imprisoned her and forced her to abdicate in favour of her son james
Mary escaped imprisonment by the Scottish protestant lords and raised an army but this was deafened near Glasgow Mary subsequently fled to England seeking Elizabeth for help
1568 Mary was held in England in comfort but under guard while Elizabeth decided what to do with her
Marys arrival in England created a problem for Elizabeth by remaining in England she could encourage a rebellion
relations between the two monarchs was tense as Elizabeth became increasingly concerned about the presence of Mary in England
help Mary regain the throne
would anger the Scottish nobility and leave Elizabeth facing a catholic monarch on her northern boarder the auld alliance could be revived to threaten her
hand Mary over to the Scottish lords
Mary was the widow of the French king her trial imprisonment AND execution by Scottish noblemen with elizabeths permissioncould provoke France driving them to an alliance with Spain with could lead t war with England
allow Mary to go abroad
allowing Mary to go abroad could see her return to France provoking a French plot
keep Mary in England
keeping Mary in England was the best option for Elizabeth however it carried a risk that catholic plotters might try overthrow eliaeth and replace her with Mary
another thing Elizabeth could have done was acknowledge
Mary as her heir however this would anger English protestants especially the ones on her privy council