I feel like she's winning

My garage dwelling MIL. She only started her radiation therapy yesterday and refuses to tell my husband how long/ how many treatments (she didn't go today, only yesterday so far). I also read that she needs to see her doctor one last time 4-6 weeks AFTER her last treatment so best case scenario, she's here for another month. Worst case, another two month. I don't think I can take it.

I've been seeing a therapist who says my feelings are 100% justified, that she feels that my MIL is here to move in and destroy my marriage so she can have my husband all to herself. And I have to say that since that last argument my husband and I had, I can see it working.

He hasn't told me he loves me in weeks (I keep saying it to him, but he doesn't say it to me first). He barely thanks me for anything anymore. My therapist said he's got like, Stockholm Syndrome with her almost and I shouldn't take anything he says or does personally, but I can't help it. She says I must try change my perspective to his, so it shows that I understand his situation and not that I accept it, but that I support him. So last night I made sure to include a plate of food for my MIL. He went to take it to her, he didn't even thank me.

He doesn't help me with anything around the house anymore. He swept the house twice like two weeks ago and he peeled some potatoes for me on Sunday but that's it. That's the extend of anything that he's done in months. He will see me doing x,y,z and say nothing. He will see me struggle to get everything done and do nothing. I said to him weeks ago I feel like our marriage is over and I must just leave and he said why do I feel like that, no I musn't go. But how can I stay with a monster on my property and him defending her all the time? I can't even talk to him about ANYTHING I feel anymore because anytime I mentioned anything to do with my feelings, he snaps at me that "it's all about you, isn't it" and "you have too many feelings". I've lost nearly 5kgs from stress alone.

My friend says I must just have faith and keep going to the therapist and I will see a change, but I actually feel like I need a break. I am so devalued, overlooked, unheard, alone. I said right in the beginning of this saga that I didn't want my husband to resent me at the end of it, but I didn't think that I'd end up resenting him.

@Ashley, she didn't diagnose him. She said it's almost as if he's got it. If I worded incorrectly then sorry. Also, my therapist is undergoing treatment for cervical cancer for a second time and says that it's no excuse for how my MIL has been treating me. Also my MIL has a non-life threatening, Stage 0 cancer (not to invalidate her, but to like, explain that it's not like she's on deaths door). If you feel that this is an excuse to call me a dirty white, call me a racist, call me dirty, say I live like a pig, call my family dirty because we all have pets, tell blatant lies about the past, mock how I talk, mock how I exercise, redecorate my house with no permission, tell my husband that she should have interfered without relationship earlier, tell my husband that he doesn't even know me, talk ill about me on the phone to who knows who while being a GUEST, simply because I told her she can't just walk into a bedroom with the door closed without knocking, then that's your prerogative but I don't have to deal with that level of disrespect.

My therapist came highly recommended off my local community group. To clarify, she's not diagnosing him but trying to find reasons for his actions. She wants to see me once more, then she wants to see us together and start seeing him separately (my husband has been in therapy before, he has a lot of problems so it will be good for him to go back). I have never been in therapy before so I don't know what's normal, what's not.