Boss Battle on limited access?

[allelvia]

hi all, this is my first post so be gentle with me :-)

i have a friend who is currently unlimited, but plans on canceling before her month is up. she's level 26 at the moment, obviously all of her skills will be lowered. but will this take away her ability to complete the boss battle? she's worked really hard for this, just doesn't have the money to be spending $10 on a game a month.

so really my question just is, is the boss battle available for limited access when it becomes available?