<p>I think you misunderstand the value of an internship. </p>
<p>Many people think of an internship as something to put on your resume. While this is true, it only has value on a resume if you’ve actually learned something or developed some capabilities that you wouldn’t have otherwise learned or developed. Otherwise it’s just bs. </p>
<p>Have you learned anything tangible? Developed any capabilities?</p>
<p>From what I’ve heard, the biology business has gotten very exploitative and your situation sounds typical. Your supervisor is probably a 7th year grad student and has herself been living on subsistence wages for a long time. She may herself not have bright prospects since there is such a glut of biologists. She may be under a lot of pressure, and knows that there are plenty of people who will jump through the hoops that you’re unwilling to jump through. She knows that the only way for her to get ahead and get her next position is to exploit people the way that she’s been exploited. </p>
<p>So, while she shouldn’t be treating you that way, it’s really up to you if you want to continue. She’s not going to give you a recommendation. Frankly, I’d quit and try to find a different opportunity in another lab. I would never treat people like that. </p>
<p>I’d basically sit down and calmly tell her that you have other responsibilities that take priority and it’s obvious you can’t make her happy within your schedule. Thank her for the opportunity and wish her luck on her dissertation (sounds like she’s going to need it).</p>