Friend who's not always nice

[mummypleeeaaaasseeee]

It's not a huge issue, but nonetheless here it goes. I have a friend I thought i was fairly close to but certain things are starting to grate on me.
She makes little comments about things in a passive aggressive way that are nothing really but feels like they are meant as a put down
For example
We are part of a friendship group and in a group chat recently we all wished each other merry Christmas and most of us posted photos of Christmas table/decoration etc
I posted a pic of our table just before starting our meal, no food on it, just thought it was pretty with candles etc. Similar to what others posted that friend negatively commented on a piece of furniture that could be seen.
She often seems to make little digs disguised as jokes. I guessi just put it down to "that's just how she is" but I'm starting to have enough.
My last straw was her sending a Christmas card to "mummypleeease and family "
She knows me since i was a kid, she was at our wedding, she was my bridesmaid ffs, she certainly knows my husbands name and my kids names, so is it that much trouble to write them?!
Maybe I'm overreacting?
I guess what I'm asking for is good comebacks for little digs/not-so-nice jokes?
They usually take me off guard so i have no reply really but I want to let her know it's not on anymore.
I'm not going to dump her as we're both part of a group and it would be awkward

The Christmas card thing is a total and utter non issue. It wouldn't mean anything at all within a normal friendship, it's just a quick way to write a card - personally I think writing cards at all to people you see in person is pretty insane anyway...

If she makes jokes at your expense she's not your friend though, just treat her as you would an acquaintance and leave it. Anyone who's fall back when called out on mean digs is "I was just joking" is an arse.

I had a friend like this. It used to really get to me then one day she took it too far, all ‘harmless’ and ‘only joking’
I tried ghosting after I’d told her she pissed me off.
She wouldn’t leave me alone and kept on and on trying to ingratiate herself with me, suddenly turning the tables and telling me how amazing I am...
I ended up having to tell her straight I don’t want to be friends with her anymore , she said she was devastated and phoned our mutual friends crying, going round each friend one by one.
It’s made things a bit awkward when it comes to mixed social events and I feel a bit guilty that she was so upset but I’m so much happier without her in my life.

I can't get over:

My last straw was her sending a Christmas card to "mummypleeease and family "

This is such a non issue, how can it possibly be the 'last straw'?

What the fuck is 'passive aggression'?

She might not mean any harm. Sometimes people misjudge a situation and think that someone is ok with a more robust sense of humour than they actually are. If that's the case, and you bite back, you'll be validating her "banter". Let her know you don't like it, and see if she apologises and tones it down.

This.

I once had a friend suddenly have a go at me and tell me I was always putting her down. I had absolutely no idea that she had taken offence at what I had thought was innocuous comments. I am very straight talking and clearly too straight in that case. When I was aware of it I of course made efforts not to possibly be seen as negative but it had been a total shock to me that she was taking offence. Just check out that your friend is not like this.

Google it Rott.
Call her on it every single time. Head tilt, 'Being a dick again, DF?'

I had a frenemy like this
Brilliant when the chips were down. Thrived on trauma and drama

This is my ex frenemy to a T. I'd never thought about it like that, but she has to be involved in everyone's lives, and loves 'helping out' in times of crisis...

I agree the Christmas card issue is a non issue.

Otherwise I think you need to be more straightforward and honest about things. Trying to think up clever comebacks is silly and doesn't work. If she says something you don't like then you don't have to 'confront' her all you need to do is to tell her politely that you don't like it and ask if she can not say it again. If she does t like it then that's her problem.

Distancing yourself is fine too but personally I prefer the more straightforward approach.

Say "Thank-you" or tell her she is so sweet, post a bunch of xxx" Maybe that will make her stop.

digs about my DH car - after posting a pic of snow outside and only a very small part of car could be seen on the side

I don't get this. Did she say car was invisible but it clearly wasn't?

Cant surely something along the lines of saying the car looks better hidden under the snow? It all sounds very petty. Christmas cards not being addressed to everyone by name and making digs about your husband's car... Presumably it's just a constant drip, drip of little mean comments making the op hyper sensitive...