9 month old female keeps attacking 4 year old male...advice?

I'll try and keep this brief. Mid December I got a call from my sister who informed me a young stray had wandered into her offices and would I be willing to rehome her as no one else was interested. I said yes, brought her home and kept her in a seperate room in the house for two weeks before slowly introducing her to my male cat. Everything seemed to be going fine, they'd sleep in the same room every night, albeit at opposite ends, she'd hiss occasionally if he came too close for comfort but was getting to the stage where she'd bump noses with him.

After about two weeks of this I began to suspect she was pregnant and the vets confirmed this to be the case. About two weeks ago she was starting to get really moody and attacked my male cat. He did his best to escape, but every time he got away she chased after him. I managed to get a sheet over her which gave him time to leave the room and then I put her back in her safe room. Neither of them were hurt thankfully.

She went into labour on Thursday, unfortunately it was very traumatic. The first kitten had obviously died very early on in the pregnancy and wasn't fully formed and the second kitten got stuck and we had to rush to the vets where she had an emergency c-section. She returned Friday afternoon, after obviously losing both kittens. I put her in her safe room and slept with her and she was crying out quite a bit.

Anyway this morning she shot out past me as I went to put her food in, my male cat had just happened to walk behind me as he was on his way downstairs. She went straight for him again. I quickly intervened as I was worried they'd both end up hurt and her wound may open up.

I am now very concerned that any progress we were making with their relationship is ruined. Do people think this is the case? Or is it possible I will be able to get them to live without him being in constant fear of an attack. (I do intend on keeping them seperate until her wounds have fully healed... Which may be a couple of months in reality as she will be back in for her spaying in a months time).

Not that brief, but any help would be greatly appreciated!

Thanks

I'd say carry on with the seperation unti the wounds are healed and during this period try some scent swapping excercises.

You can use an old cardboard box. Put one in her area, one in his, after a couple of days of them both using the boxes put them in the other one's area then swap them back again a few times so they get used to eachothers scent. If you don't want to have cardboard hanging about you could try colar swapping or bedding. You can try adding something positive to that area like some of their favourite treats. This should re-inforce that  not only is the other cat not a threat but good things happen around the other cat. 

The next step would be feeding them on opposite sides of a screen, although it isn't always practical depending on how your home is set up and what you have available to you. You might have one cat who is a very healthy appetite and finishes their food quickly, leaving them time to go for the other one whilst their guard is down and then it's back to square 1.

If you have a large room in your house you could play with them both at the same time, you'll need the help of someone else to play with whichever cat, any time they aren't focussed on the toy presented you need to win back their attention and you may be able to do so with a treat or a different toy.

Finally your emotional approach to the re-introductions is going to be very important. If you approach it with stress and worry the cats will be on-edge too. The best thing would be to be prepared with distractions and toys and make sure that you have someone else if possible to help with any possible problems although if you have managed to do the screen technique it should be ok

Ok, sounds good. I shall persevere at a much slower rate than before. Fingers crossed it works! Thanks for the help