<human>: Hello,

I'm in a bit of a tough situation right now, and I could really use some advice. Sorry this post is a bit on the long side. 

I am 18 years old, a citizen and resident of the USA, living with and dependent on my parents. My father is very over-controlling and abusive, and my mother is not as bad, but is no help. My parents have always controlled my money and finances. I have my own debit card which is linked to my own bank account; however, that account is set up so that my mother's account is a parent account of it, so she can see all my account activity. 

This has never been a problem in the past, but now I desperately need medication for my mental health. My father would not allow me to purchase it, and I cannot trust my mother on this subject. 

I have done sufficient research to be confident that I know what medicine I need and so on; you need not be concerned about my safety. I plan to purchase from a legitimate overseas pharmacy (and I know it is a legitimate one.) However, I really need advice on how to make this purchase without my parents knowing. 

I can obtain the money for myself as cash. The problem is how I should pay the pharmacy. Their website states that they accept Visa debit and credit cards (I have a Visa debit card), MasterCard (which I do not have), eChecks (which I know nothing about), wire transfer (which I also know nothing about, and any money transfer service other than PayPal (which - you guessed it - I also know nothing about). That is all they accept. 

I know so little because I have never had to even think about my own finances like this before. If anybody would be so kind as to walk me through which option is best for me and ensures my privacy and thus my safety, I would be truly grateful.

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: I'm 18 and dependent on a controlling and abusive parent. I need to obtain mental health medicine without his knowledge, and have no idea how.