There is a world somewhere between reality and fiction. Although ignored by many, it is very real and so are those living in it. This forum is about the natural world. Here, wild animals will be heard and respected. The forum offers a glimpse into an unknown world as well as a room with a view on the present and the future. Anyone able to speak on behalf of those living in the emerald forest and the deep blue sea is invited to join.
Well. Lionesses typically dont join coalitions, so scenarios are really rare and seeing we are only studying a few lions at this level for a few decades at most. So we more likely just have never been lucky enough for it to be captured on camera. Not to mention that lionesses mature much faster than males. So most lionesses in that situation would likely leave the group long before they become territorial.
In any case, I extremely doubt the presence of the sister has any impact on any decisions the males make. If enough members in a coalition are confident enough to fight. Then they are going to fight, even if some of the group flees regardless if those fleeing members are male or female. Right now what we are seeing is that only one or two members of the kambulas are confident enough to try stuff, so the issues are wider than just the lioness. I think this is mostly a case of people having way to much expectations for a coalition based on numbers alone and are now getting impatient or frustrated that they are taking a little longer to mature.
As for what is going to happen with her.
Most likely she will reach maturity first and break off from her brothers to rejoin her maternal pride or seek mates on her own or she gets left behind once the coalition settles in another prides territory. If the situation continues, she may have a litter of her own, forcing the entire group to settle down somewhere into a quasi pride pride male situation.
It can also not be ruled out she just integrates in whichever pride her brothers take over. Though the only pride I can think of that may be open to that is the tsalala pride.