Hi,
There are afflictions to planets signifying father/sister, in your birth-chart. In fact, it looks like the said relationship has been detached for a while and things could get a bit more acute. In fact, it looks your relationship with your sister may be equally detached.
Given the situation, it might not be a bad idea for you to consider offering special prayers on a regular/daily basis to Lord Ganesha, with unwavering faith, bhakti/devotion and a strong Sankalpa… as also chanting Aditya Hrudayam.
Lastly, it does not make sense for you to blame your sister for your situation.
Take care…