Please tell me if it’s wrong to ask. Or if I’m crazy to ask

Hi everyone, I’m 20 and my parents are both around 60. We’ve had a rocky relationship, but they recently promised me that I could spend summer break with them. It was supposed to be a time of healing and support. I’ve struggled with cocaine addiction but I’m actively working on stopping. What I really wanted—more than anything—was to be surrounded by family love while trying to improve my life. They live in Montana and I’m all the way in New York so it’s very far.

I have broken all cards for getting $ atms I also told them I will be putting my money into fixed term account for 6 months. Putting some with them for rent and buy just shop vouchers. Regardless I’m going this. 100% certainty that I’m truly doing this myself. I just wanted to be around love and support while doing it as I feel it has been a contributing factor to my issues partially.

Now they’ve gone back on that promise made last year. It’s not just disappointing, it’s devastating. It’s not even about paying rent for an unplanned time. I’ve expressed how alone and unloved I feel, but I keep getting cold, distant responses. I told them about my issues with recent drug abuse as I have been extremely lonely after moving out a year ago while I was after a bad break up, but I never asked them to fix it for me—I just asked for their company while I did the hard part on my own.

They used to get 300$ a week from the government while caring for me (from age 6–17), but looking back I was never legally adopted, and they never seemed to put anything away for my future. I would’ve if the roles were reversed. That stings deeply.

I’m seriously considering asking them to take a professional lie detector test—just to prove to me they’re being honest about why they don’t want me there and what really happened growing up…. They went to court to bring me home after social workers took me away from them they never adopted me but I was always fostered by them. I used to think this was all the proof I needed to know they loved me fully. But then I remembered that people were accusing them of having beat me or touched me and that’s why I was taken away from them… It would make sense to fight that court case to bring out as much evidence that that wasn’t the case and maybe it wasn’t so much about love.

I’ve tried to put myself in their shoes but honestly all I’ve come to see is that I wouldn’t do this to my kid. And many things aswell I just wouldn’t like not even putting away 50$ a week out of $ 300.$

It’s about closure at this point, not revenge. But part of me wonders… is that too much to ask? Is it wrong?

I don’t know what else to do. I feel like I’m shouting into a void. I just want the truth and to know whether or not I was ever really loved. Too many things being suspicious. And I’ve thought these being possible way before drug abuse but this time is real cause I have been really let down and all I can think is “If I ever have kids I’m never doing this”

TLDR

Is it bad or unfair to simply ask parents to take a lie detector test that I pay for.?

If it were me and I had nothing to hide I’d be like yeah sure… I’ve never done one before so that be an interesting experience. 80-90% accuracy