Using marriage as an escape route is extremely risky, marry when you are ready and with the right person would give you peace, don't let her attitude push you into a lifetime regret.

I hope your sister recovers soon, most times sickness make people act out of character, just keep taking care of her, behind that mean attitude is someone who just want to live healthy. Immediately she recovers she would be a nice sister.

You will be alright ♥️