Confusing Coworker runs hot and cold

I have a coworker-well, I have 2, but one in particular who is just difficult to deal with.

She's a whole lot like me in personality-just more intelligent and more competent. She runs hot and cold. She's clueless as to how rude she can be and how she hurts others. She will sometimes be friendly and other times cold. Sometimes, she is nice and will forward a silly email. Other times, she acts like I am an enemy.

She is not diagnosed as borderline. I stay to myself now and I dont' bother people upstairs anymore, but it kind of rattles me when she sends one of those goofy emails.

I could ask her not to do that, but I still feel the need for acceptance.

You know how we *split*-Well, I split a lot over this lady but I am getting better. I don't know why I still fear rejection.

I deleted the email and I radically accept that the co-worker has problems similar to mine. Maybe for now, that's enough.

I have a hot and cold coworker like that too. I don't think she's borderline though. I'm not sure what her problem is. She just is not my kind of person to be with, and because I feel she has a mean streak in her, just having to sit near her and have her hostile presence near me is enough to trigger me almost every day. I have no solution to the problem though, other than to leave this job, which I don't want do at this stage now. It's not the right time.

I just basically try not to talk to this person unless she talks to me first. I am not going to go out of my way to talk to her.

Sometimes people just don't want to be bothered, & probably have so much going on in their lives that the outsider looking in could never know. At work, we're forced to be around people all day, everyday who we may not normally choose to be around, which may be difficult for some to deal with, so many different personalities in the workplace just forced to be together day in & day out... That's why I just stay to myself as much as possible & focus strictly on my work like I'm paid to do. I'll treat everyone with respect, but that doesn't mean I will feel the need to be their best friend & share my whole life with them, nor do I need to know about theirs. I say just leave her alone & just let her be. Clearly she doesn't really want to deal with anyone on certain days, don't take it personally. It could just be something she's temporarily going through on a given day. You can never know what her problem is, just let her be & take her emails as clues that you shouldn't take her coldness on some days personally.