Welcome to SR.
Both of your parents are very sick and both are making you sick. Of course you have anxiety. Some days it must feel your anxiety is going right through the roof. I would lose my mind having to live with that insanity day after day. I would become very ill, have panic attacks and probably clinical depression. Normal people living with insanity become very sick themselves.
So you have to get out and soon. Very very soon. Since you have a counselor, ask that person to help you formulate a plan to get out of that home. Make that your number one priority for Spring. You are not stuck (nor is your mother but she probably has many rationalizations for why she is "stuck" with her life as it is). But you are living in a toxic family which affects your unconscious attitudes about life, about what is possible for you, about what you deserve (peace of mind, healthy relationships, meaningful work), and your unconscious has a lot of power over you. It will hold you there as if you were chained to your bed.
Tell your counselor you have to get out. Enlist that person's assistance in brainstorming school financial aid/loans, cohabiting in a house via craigslist, being a housesitter/petsitter, anything that will get you away from the house and family you are currently enduring. Because they are going to destroy your spirit. There is no "detaching with love" from that kind of insanity until you physically remove yourself from their prison and then continue counseling and some support groups to get your head clear.
Many of us here found ourselves at your age with limited options but with desperate determination to get away from abuse. And you are being abused. Many of us here had to realize that we were going to die--emotionally, surely, but perhaps literally--if we did not escape our abusive poisonous households.
Ask the counselor....TELL the counselor.....you have to get out and you have to have help in making a concrete plan. And that you are running out of time. You are becoming sick. To take you seriously and work with you toward liberating you from that which is damaging you, mind and body, everyday.
"Soon" need to be ramped up to "immediate future". You can do it. You have to.
It is extremely unlikely your parents are going to change. This is what they have made of their life.
Make more of yours.