... tablets. I have moved in with my partners parents however his mum is so irritating some times. She is nosy and has a problem with everything like my partner put something in the wrong place because he didn't know where it went and she got angry and when I cook she always interferes .. Sometimes she means we'll but most of the time she's just being controlling. She stomps around the house when she's in a bad mood like a bloody child and she just gets angry with anything that's considered normal to other people she also shouts at the dog all the time and ugh how do I deal with it! Does anyone else have these problems? My mum would never act like this nor my step mum or aunties I don't get it in she just mentally weird?
Normality covers a wider spectrum of behavioural quirks than most people might be willing to accept. That is why they elect to move out of their parents' residence, in spite of the financial difficulties it posits.
Have you not had to deal on a daily basis with individuals who disregarded to an extent your ocd or other grievances before? There certainly isn't a shortage of those out there.
I'm sorry you're going through this right now. I'm proud you're aware of your issues (OCD, depression.) This might help you deal with your partner's mother and her issues. Try not to compare her to your own mother, they have different positive and negative qualities. Which brings me to,
try to think her positive characteristics. Support her when you see she's getting frustrated, go for a walk if you are. Most importantly communicate with her AND you partner. Try not to be emotional, and show concern. Finally, make a plan to move out, remember you're in their home.
The first line of defense against depression and anxiety is B vitamins. Get B-50 or B-100 pills. Vitamin B2 is a water soluble dye that turns urine bright yellow. When the color fades, it's time for another dose. Vitamin B1 helps you to put up with people you have to deal with. Read some books about nutrition so you know how to eat right.
I hate to say this, but it is HER HOUSE. You have several options. You can try to talk calmly with her and ask why she seems so angry all the time. You can get out of her house. You can tell her she is annoying. You can ask your partner if she has always been this way or what, or you can find something else to do to distract yourself.