I'm going to weigh in here, because it looks like the situation warrants it: 

[quote=@Caits]
Niesha actually had no idea if that would happen, it seemed logical given the bodies pysiology, the position of blood vessels and nerves. She was banking on Astrid not knowing that much about the make up of the body, or at least that it made sense to get her hands at least free of the restraints.
[/quote]
(You can find the full post [url=http://www.roleplayerguild.com/posts/3777563]HERE[/url].)

Further, let's take a look at your character's skills, pertinent to the exchange: 
[list]
[*] knowledge of drugs and how to make them
[*] basic first aid skills
[/list]

From the skills actually listed, [b]Astrid has a higher level of medical training than Niesha[/b]. (First Aid vs. Basic First Aid)

First Aid is: "Help given to a sick or injured person until full medical treatment is available." I have a background with First Aid, amongst other things. Had to re-cert more recently on account of contracts insisting that someone on scene having papers to that effect. First Aid is a stopgap measure, not a segue into anatomy. 

I get that Niesha is supposed to be a medical professional. The skills she has access to, despite insistence to the contrary, are limited to what is listed under the skills section of the CS. In your case, it's pretty cut and dry. She knows about drugs and how to make them, and she knows how to give assistance until qualified medical help arrives, period. Your character's background has her able to do much more, [i]but you do not have it listed under her skills[/i]. 

When it comes down to it, bottom line, end of day, the big issue here is Rule One: [u]GM is Goddess; GM has final say on all matters[/u]. The issue has been resolved, character reactions have occurred. Let's all be like Elsa and Let It Go. Your character didn't exactly make her Charisma check (so to speak) this go around. It has been a month IC since then. If tempers haven't cooled a bit in that time, this may well develop into a situation to be resolved in play. 



And simply for my own edification: Your location, in every post header for a while now, has been a "Quite Place". What gives?