Friend staying over?

ok so idk where to post this an I'm having conflicting feelings about it all so I thought I'd ask you ladies what you would do. I need some advice ?? So a good friend of mine, (maybe my only friend) asked today if she could maybe stay in our spare room a few weeks maybe a month till she gets her new job which she has an interview for Monday and an apartment more suited to her. (I should add she's not your typical person she's a college graduate with like a bachelors in business or something. Don't quote me on that. She's a smart girl, good friend, just trying to find out where she needs/wants to start her career.) She doesn't wanna stay with her mom cause honestly there no room there for her when I have a unused spare room. Well here's my problem, she a bit of a control freak, constantly disses my cooking, kinda mean to my kids while her own get special treatment. not that I mind her being hard on them but it's the little things. My youngest likes to walk up an hug me and she yells get out of the kitchen!!! when she woulda hugged me an walked away anyway. per norm. I've told her at these times they're fine woman leave em be. I'm also like 4 weeks away from baby number 4 making his appearance, not sure I want her here for that. I just want my baby and my hubby an kids to ourselves. I'm a stay at home mom till baby arrives and I go back to work which will be at least 6 weeks after baby comes. I'm conflicted because I know it would be helping my friend an us, ( she offered to help pay rent an food while she's here, like I said in outta work till baby comes) but I'm not sure I can stand her staying here, she's a good friend just not the kind you wanna see every day, she just gets annoying. Like I don't make every meal in to some thing extravagant. I eat a bowl of cereal where she eats eggs bacon potatoes with all the trimmings special seasonings sausage and pancakes. not trying to make her sound fat but she likes to make whole meals 3 times a day where a bowl of cereal suits me just fine. ok so the girl drives me nuts most the time. But she's funny she's a good friend. ugh! I just don't know how I feel about her staying with us. I'm really battling myself I want to help her I have a big heart and love helping other when I can manage I really do, just so close to the baby coming an the little things that drive me nuts leaves me unsure of which way to go. So what would you do? baby coming and best friend needs a bed to rest their head for a short while. ?? Take your friend in or just say no. If I say no she'll have to take the apartment she's looking at. which I think will be better for everyone I personally hate staying with people I'd rather be in my own house free to do what I want. ya know. just needing a second opinion what would you do?